AMERICAN COASTAL INSURANCE (ACIC) 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document & Entity Information

Document & Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 02, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2,018
Trading Symbol	UIHC
Registrant Name	United Insurance Holdings Corp.
Central Index Key	1,401,521
Current Fiscal Year End Date	--12-31
Filer Category	Accelerated Filer
Common Stock, Shares, Outstanding		42,984,578
Document Period End Date	Sep. 30, 2018
Entity Emerging Growth Company	false
Entity Small Business	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investments, at fair value:
Fixed maturities (amortized cost of $854,640 and $763,434)	$ 836,390	$ 762,855
Equity securities fair value	93,092	63,295
Loans and Leases Receivable, Net Amount	0	20,000
Total investments	937,812	854,531
Other investments (amortized cost of $8,069 and $8,057)	8,330	8,381
Cash and Cash Equivalents	240,950	229,556
Restricted Cash	65,131	46,719
Restricted Cash and Cash Equivalents	306,081	276,275
Accrued Investment Income	5,771	5,577
Property and equipment, net	16,583	17,291
Premiums receivable, net	78,417	75,275
Reinsurance recoverable on paid and unpaid losses	433,554	395,774
Prepaid reinsurance premiums	319,916	201,904
Goodwill	73,045	73,045
Deferred policy acquisition costs	105,764	103,882
Intangible Assets, Net (Excluding Goodwill)	32,716	45,271
Other assets	12,570	11,096
Total Assets	2,322,229	2,059,921
Liabilities
Unpaid losses and loss adjustment expenses	528,842	482,232
Unearned Premiums	643,540	555,873
Reinsurance Payable	297,173	149,117
Payments outstanding	50,789	41,786
Accounts Payable	52,100	46,594
Other Liabilities	40,199	85,830
Notes Payable	160,708	161,364
Total Liabilities	1,773,351	1,522,796
Commitments and Contingencies
Stockholders' Equity
Preferred Stock, $0.0001 par value; 1,000,000 shares authorized, none issued or outstanding	0	0
Common Stock, $0.0001 par value; 50,000,000 shares authorized; 43,034,270 and 42,965,137 issued; 42,910,579 and 42,753,054 outstanding, respectively	4	4
Additional Paid in Capital	388,820	387,145
Treasury shares, at cost; 212,083 shares	(431)	(431)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(13,702)	9,221
Retained Earnings	154,186	141,186
Total Stockholders' Equity	528,877	537,125
Stockholders' Equity Attributable to Noncontrolling Interest	20,001	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	548,878	537,125
Total Liabilities and Stockholders' Equity	$ 2,322,229	$ 2,059,921

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, authorized shares	0	0
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized shares	50,000,000	50,000,000
Common stock, issued shares	43,034,270	42,965,137
Common stock, outstanding shares	42,910,579	42,753,054
Treasury stock	212,083	212,083
Schedule of Available-for-sale Securities
Other investments, cost	$ 8,069
Fixed Maturities
Schedule of Available-for-sale Securities
Fixed maturities, cost	854,640	$ 763,434
Other Long-term Investments
Schedule of Available-for-sale Securities
Other investments, cost	$ 8,069	$ 8,057

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUE:
Gross premiums written	$ 295,935	$ 267,219	$ 960,214	$ 788,408
Change in gross unearned premiums	8,021	782	(87,667)	(76,758)
Gross premiums earned	303,956	268,001	872,547	711,650
Ceded premiums earned	(132,626)	(115,507)	(365,011)	(292,355)
Net premiums earned	171,330	152,494	507,536	419,295
Investment income	6,888	4,901	19,665	12,489
Net realized gains (losses)	(447)	(71)	(674)	(554)
Unrealized Gain (Loss) on Securities	6,109	0	5,046
Other revenue	3,772	13,804	11,280	40,604
Total revenue	187,652	171,128	542,853	471,834
EXPENSES:
Losses and loss adjustment expenses	120,552	143,127	286,393	293,398
Policy acquisition costs	54,200	46,546	153,716	125,302
Operating expenses	10,976	6,891	28,976	19,020
General and administrative expenses	15,358	19,316	51,326	58,825
Interest expense	2,455	771	7,371	2,282
Total expenses	203,541	216,651	527,782	498,827
Income (loss) before other income	(15,889)	(45,523)	15,071	(26,993)
Other income	19	36	106	94
Income (loss) before income taxes	(15,870)	(45,487)	15,177	(26,899)
Provision for income taxes	(4,163)	(17,475)	3,815	(10,043)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	(11,707)	(28,012)	11,362	(16,856)
Net income (loss)	(11,708)	(28,012)	11,361	(16,856)
Net Income (Loss) Attributable to Noncontrolling Interest	1	0	1	0
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	1	0	1	0
OTHER COMPREHENSIVE INCOME:
Change in net unrealized gains (losses) on investments	(3,354)	2,672	(30,706)	10,509
Reclassification adjustment for net realized investment (gains) losses	447	71	674	554
Income tax benefit (expense) related to items of other comprehensive income	699	(1,050)	7,110	(4,207)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(13,915)	(26,319)	(11,560)	(10,000)
Total comprehensive income	$ (13,916)	$ (26,319)	$ (11,561)	$ (10,000)
Weighted-average shares outstanding
Weighted-average shares outstanding	42,677,893	42,524,400	42,636,515	35,341,994
Weighted-average diluted shares	42,677,893	42,741,004	42,791,208	35,563,032
Earnings Per Share
Basic earnings per share	$ (0.27)	$ (0.66)	$ 0.27	$ (0.48)
Diluted earnings per share	(0.27)	(0.66)	0.27	(0.47)
Dividends declared per share (in usd per share)	$ 0.06	$ 0.06	$ 0.18	$ 0.18

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING ACTIVITIES
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 11,362	$ (16,856)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	16,192	24,206
Bond amortization and accretion	3,822	3,663
Net realized gains (losses)	674	554
Unrealized Gain (Loss) on Investments	(5,046)	0
Provision for uncollectable premiums/over and short	112	205
Deferred income taxes, net	3,232	380
Stock based compensation	1,675	1,931
Changes in operating assets and liabilities:
Accrued investment income	(194)	(183)
Premiums receivable	(3,254)	98
Reinsurance recoverable on paid and unpaid losses	(37,780)	(445,090)
Prepaid reinsurance premiums	(118,012)	(130,013)
Deferred policy acquisition costs, net	(1,882)	(35,841)
Other assets	(1,473)	(12,354)
Unpaid losses and loss adjustment expenses	46,610	480,777
Unearned premiums	87,667	76,758
Reinsurance payable	148,056	119,471
Payments outstanding	0	165
Accounts Payable	5,506	10,492
Other liabilities	(44,715)	5,974
Net cash provided by operating activities	112,552	84,337
INVESTING ACTIVITIES
Proceeds from sales and maturities of investments available for sale	176,019	106,150
Purchases of investments available for sale	(276,483)	(136,319)
Cash Acquired from Acquisition	0	95,284
Cost of property, equipment and capitalized software acquired	(2,675)	(4,243)
Net cash provided by (used in) investing activities	(103,139)	60,872
FINANCING ACTIVITIES
Investment in Subsidiary - NCI	20,000	0
Payments of Debt Issuance Costs	(62)	0
Repayments of borrowings	(849)	(1,142)
Payments of Dividends	(7,699)	(6,426)
Net Cash Provided by (Used in) Financing Activities	20,393	(15,629)
Cash, Cash Equivalents, Restricted Cash Increase (decrease)	29,806	129,580
Cash, Cash Equivalents, Restricted Cash at beginning of period	276,275	150,688
Cash, Cash Equivalents, Restricted Cash at end of period	306,081	280,268
Supplemental Cash Flows Information
Interest paid	4,990	2,001
Income taxes paid	4,673	4,206
Stock Issued	$ 0	$ 274,384

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Parent	Noncontrolling Interest	Comprehensive Income
Beginning balance (shares) at Dec. 31, 2016		21,646,614
Beginning balance (Total) at Dec. 31, 2016	$ 241,327
Beginning balance (NCI) at Dec. 31, 2016							$ 0
Beginning balance (Parent) at Dec. 31, 2016		$ 2	$ 99,353	$ (431)	$ 141,581	$ 241,327		$ 822
Net Income (Loss), Total	(16,856)
Net Income (Loss), Parent	(16,856)	0	0	0	(16,856)	(16,856)		0
Net Income (Loss), NCI	0						0
Other Comprehensive Income (Loss), Parent		$ 0	0	0	0	6,856		6,856
Other Comprehensive Income (Loss), NCI							0
Other Comprehensive Income (Loss), Total	6,856
Stock Issued During Period, Shares, Shares-based Compensation, Gross		138,035
Stock Issued During Period, Value, Restricted Stock Award, Gross	1,931	$ 0	1,931	0	0	1,931	0	0
Stock Issued During Period, Shares, New Issues		20,956,355
Stock Issued During Period, Value, New Issues	274,384	$ 2	274,382	0	0	274,384	0	0
Cash dividends on common stock	(6,426)	$ 0	0	0	(6,426)	(6,426)	0	0
Cash Acquired from Acquisition	95,284
Investment in Subsidiary - NCI	0
Ending Balance (shares) at Sep. 30, 2017		42,741,004
Ending Balance (Total) at Sep. 30, 2017	501,216
Ending Balance (Parent) at Sep. 30, 2017		$ 4	375,666	(431)	118,299	501,216		7,678
Ending balance (NCI) at Sep. 30, 2017							0
Reclassification due to adoption of ASU 2016-01	$ (9,338)
Beginning balance (shares) at Dec. 31, 2017	42,753,054	42,753,054
Beginning balance (Total) at Dec. 31, 2017	$ 537,125
Beginning balance (NCI) at Dec. 31, 2017	0						0
Beginning balance (Parent) at Dec. 31, 2017	537,125	$ 4	387,145	(431)	141,186	537,125		9,221
Net Income (Loss), Total	11,362
Net Income (Loss), Parent	11,361	0	0	0	11,361	11,361		0
Net Income (Loss), NCI	1						1
Other Comprehensive Income (Loss), Parent		$ 0	0	0	0	(22,923)		(22,923)
Other Comprehensive Income (Loss), NCI							0
Other Comprehensive Income (Loss), Total	(22,923)
Stock Issued During Period, Shares, Shares-based Compensation, Gross		157,525
Stock Issued During Period, Value, Restricted Stock Award, Gross	1,675	$ 0	1,675	0	0	1,675	0	0
Cash dividends on common stock	(7,699)	0	0	0	(7,699)	(7,699)	0	0
Cash Acquired from Acquisition	0	$ 0	0	0	0	0		0
Investment in Subsidiary - NCI	$ 20,000						20,000
Ending Balance (shares) at Sep. 30, 2018	42,910,579	42,910,579
Ending Balance (Total) at Sep. 30, 2018	$ 548,878
Ending Balance (Parent) at Sep. 30, 2018	528,877	$ 4	388,820	(431)	154,186	528,877		(13,702)
Ending balance (NCI) at Sep. 30, 2018	20,001						20,001
Reclassification due to adoption of ASU 2016-01	$ 9,338	$ 0	$ 0	$ 0	$ 9,338	$ 9,338	$ 0	$ 0

Organization, Consolidation and

Organization, Consolidation and Presentation (Notes)	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	ORGANIZATION, CONSOLIDATION AND PRESENTATION (a) Business United Insurance Holdings Corp. (referred to in this document as we, our, us, the Company or UPC Insurance) is a property and casualty insurance holding company that sources, writes and services residential and commercial property and casualty insurance policies using a network of agents, four wholly-owned insurance subsidiaries, and one majority-owned insurance subsidiary. Our largest insurance subsidiary is United Property & Casualty Insurance Company (UPC), which was formed in Florida in 1999 and has operated continuously since that time. Our four other insurance subsidiaries are Family Security Insurance Company, Inc. (FSIC), acquired via merger on February 3, 2015, Interboro Insurance Company (IIC), acquired via merger on April 29, 2016, American Coastal Insurance Company (ACIC), acquired via merger on April 3, 2017, and Journey Insurance Company (JIC). See Note 4 in these Notes to Unaudited Condensed Consolidated Financial Statements for additional information regarding acquisitions. JIC was formed in strategic partnership with a subsidiary of Tokio Marine Kiln Group Limited on August 30, 2018. This subsidiary holds a noncontrolling interest in JIC. Our other subsidiaries include United Insurance Management L.C. (UIM), a managing general agent that manages substantially all aspects of UPC, FSIC and IIC's business; Skyway Claims Services, LLC, which provides claims adjusting services to UPC, FSIC and IIC; AmCo Holding Company (AmCo) and Family Security Holdings (FSH), which are holding company subsidiaries that consolidate their respective insurance companies; BlueLine Cayman Holdings (BlueLine) which reinsures portfolios of excess and surplus policies; UPC Re which provides a portion of the reinsurance protection purchased by our insurance subsidiaries when needed; and Skyway Reinsurance Services which provides reinsurance brokerage services for our insurance companies. Our primary product is homeowners' insurance, which we currently offer in 12 states, under authorization from the insurance regulatory authorities in each state. In addition, we write commercial residential insurance in the state of Florida. We are also licensed to write property and casualty insurance in an additional six states; however, we have not commenced writing in these states. We conduct our operations under one business segment. (b) Consolidation and Presentation We prepare our unaudited condensed consolidated interim financial statements in conformity with U.S. generally accepted accounting principles (GAAP). We have condensed or omitted certain information and footnote disclosures normally included in annual consolidated financial statements presented in accordance with GAAP. In management's opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring items, considered necessary for a fair presentation of interim periods. All intercompany balances and transactions have been eliminated. Our unaudited condensed consolidated interim financial statements and footnotes should be read in conjunction with our consolidated financial statements and footnotes in our Annual Report on Form 10-K for the year ended December 31, 2017. While preparing our unaudited condensed consolidated financial statements, we make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the unaudited condensed consolidated financial statements, as well as reported amounts of revenues and expenses during the reporting period. Accordingly, actual results could differ from those estimates. Reported amounts that require us to make extensive use of estimates include our reserves for unpaid losses and loss adjustment expenses, investments and goodwill. Except for the captions on our Unaudited Condensed Consolidated Balance Sheets and Unaudited Condensed Consolidated Statements of Comprehensive Income, we generally use the term loss(es) to collectively refer to both loss and loss adjustment expenses. We reclassified certain amounts in the 2017 financial statements to conform to the 2018 presentation. These reclassifications had no impact on our results of operations or stockholders' equity, as previously reported. Our results of operations and our cash flows as of the end of the interim periods reported herein do not necessarily indicate our results for the remainder of the year or for any other future period.

Significant Accounting Policies

Significant Accounting Policies Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	SIGNIFICANT ACCOUNTING POLICIES (a) Changes to Significant Accounting Policies We have made no changes to our significant accounting policies as reported in our Annual Report on Form 10-K for the year ended December 31, 2017, except as noted below. (b) Income Taxes As of September 30, 2018, we have not fully completed our accounting for the tax effects of the enactment of the legislation commonly known as the Tax Cuts and Jobs Act of 2017 (Tax Act) with regards to the deductibility of compensation expense for certain covered executives due to uncertainty surrounding the appropriate tax treatment of outstanding performance-based awards and the grandfather rule for existing executive compensation agreements and the uncertainty surrounding the discount factors to be applied for loss reserve discounting. The U.S. Treasury Department and the Internal Revenue Service has recently issued further clarification and guidance on the deductibility of compensation expense that we are currently reviewing for potential impact on our accounting and disclosures. Interpretive guidance of the Tax Act will be received throughout 2018, and we expect to update our estimates and our disclosure on a quarterly basis as interpretive guidance is received within each quarter that it is received. (c) Reinsurance We record provisional ceding commissions that we receive in connection with our reinsurance contracts for the 2018 underwriting year as an offset to deferred acquisition costs to the extent that they relate to compensation for acquisition costs that are incurred that are deferrable. The remaining provisional ceding commissions are recorded as unearned reinsurance commission and are recognized as an offset to other acquisition costs based in proportion to the premiums earned or coverage provided by the reinsurance contracts. (d) Recently Adopted Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting (ASU 2017-09). This standard provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU 2017-09 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted for certain requirements. We did not early adopt and the new guidance did not impact the way in which we account for share-based payment transactions. Therefore, the adoption as of January 1, 2018 had no impact on our results of operations. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18). This standard provides guidance on the presentation of restricted cash in the statement of cash flows. We are required to explain the changes during a reporting period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents in the statement of cash flows. We retrospectively adopted this standard on April 1, 2018. The adoption of this new accounting standard impacted the presentation of our Unaudited Condensed Consolidated Statement of Cash Flows but had no effect on our results of operations. The restricted cash on our Condensed Consolidated Balance Sheets at September 30, 2018 and December 31, 2017 represents cash that is held in trust for assumed business and cash held in deposit accounts to satisfy state statutory deposit requirements. In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). This update substantially revises standards for the recognition, measurement and presentation of financial instruments. This standard revised our accounting related to (1) the classification and measurement of investments in equity securities and (2) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amended certain disclosure requirements associated with the fair value of financial instruments. ASU 2016-01 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted for certain requirements. We adopted this standard as of January 1, 2018, which resulted in a reclassification of a $9,338,000 gain, net of tax, on equity securities from accumulated other comprehensive income to retained earnings on our condensed consolidated financial statements. Refer to Note 14 in these Notes to Unaudited Condensed Consolidated Financial Statements for a reconciliation. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09). Insurance contracts are excluded from the scope of this standard. Under the standard, guidance is provided on revenue recognition for entities that enter into contracts with customers to transfer goods or services or enter into contracts for the transfer of nonfinancial assets. The transaction price is attributed to underlying performance obligations in the contract and revenue is recognized as the entity satisfies the performance obligation and transfers control of the good or service to the customer. ASU 2014-09 is effective beginning in the first quarter of 2018. We adopted this standard as of January 1, 2018. The adoption of this new accounting standard did not have an impact on our condensed consolidated financial statements and related disclosures. (e) Pending Accounting Pronouncements We have evaluated recent accounting pronouncements that have had or may have a significant effect on our financial statements or on our disclosures. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). This update modifies the existing disclosure requirements on fair value measurements in Topic 820 by changing requirements regarding Level 1, Level 2 and Level 3 investments. ASU 2018-13 is effective for annual reporting periods beginning after December 15, 2019, including interim periods within those annual periods, with early adoption permitted. Entities are permitted to early adopt any removed or modified disclosures of ASU 2018-13 immediately and delay the adoption of the additional disclosures until their effective date. We have early adopted the guidance on removed and modified disclosures. We do not intend to early adopt the additional disclosures and are assessing the impact of retrospectively adopting the additions from this new accounting standard on our fair value disclosures. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). This update simplifies the manner in which an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. ASU 2017-07 is effective for annual periods beginning after December 15, 2019, including interim periods within those annual periods, with early adoption permitted for certain requirements. We do not intend to early adopt and are assessing the impact of prospectively adopting this new accounting standard on our condensed consolidated financial statements and related disclosures. Any impact of the standard on our condensed consolidated financial statements and related disclosures will be dependent on market conditions of the reporting units at the time of adoption. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (ASU 2016-02). This update is intended to replace existing lease guidance by requiring a lessee to recognize substantially all leases (whether operating or finance leases) on the balance sheet as a right-of-use asset and an associated lease liability. Short-term leases of 12 months or less are excluded from this amendment. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. We do not intend to early adopt and are assessing the impact of adopting this new accounting standard on our condensed consolidated financial statements and related disclosures using a modified retrospective approach upon adoption. We are currently quantifying the expected recognition on our balance sheet for a right to use asset and a lease liability as required by this standard.

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investments	INVESTMENTS The following table details fixed maturity available-for-sale and equity securities, by major investment category, at September 30, 2018 and December 31, 2017 : Cost or Adjusted/Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2018 U.S. government and agency securities $ 104,822 $ — $ 2,093 $ 102,729 Foreign government 2,998 — 32 2,966 States, municipalities and political subdivisions 154,195 389 2,718 151,866 Public utilities 24,898 19 775 24,142 Corporate securities 296,009 197 6,610 289,596 Mortgage-backed securities 211,288 — 6,298 204,990 Asset backed securities 59,145 5 252 58,898 Redeemable preferred stocks 1,285 3 85 1,203 Total fixed maturities $ 854,640 $ 613 $ 18,863 $ 836,390 Mutual funds $ 44,589 $ 6,506 $ — $ 51,095 Public utilities 2,045 331 19 2,357 Other common stocks 27,016 10,893 341 37,568 Non-redeemable preferred stocks 2,098 8 34 2,072 Total equity securities $ 75,748 $ 17,738 $ 394 $ 93,092 December 31, 2017 U.S. government and agency securities $ 93,827 $ 40 $ 1,241 $ 92,626 Foreign government 2,022 14 — 2,036 States, municipalities and political subdivisions 200,706 1,929 1,123 201,512 Public utilities 20,215 127 85 20,257 Corporate securities 287,025 1,746 1,209 287,562 Mortgage-backed securities 143,982 235 952 143,265 Asset-backed securities 14,902 23 20 14,905 Redeemable preferred stocks 755 11 74 692 Total fixed maturities $ 763,434 $ 4,125 $ 4,704 $ 762,855 Mutual fund $ 29,079 $ 2,845 $ — $ 31,924 Public utilities 1,343 359 — 1,702 Other common stocks 18,856 9,093 47 27,902 Non-redeemable preferred stocks 1,718 53 4 1,767 Total equity securities $ 50,996 $ 12,350 $ 51 $ 63,295 When we sell investments, we calculate the gain or loss realized on the sale by comparing the sales price (fair value) to the cost or adjusted/amortized cost of the security sold. We determine the cost or adjusted/amortized cost of the security sold using the specific-identification method. The following table details our realized gains (losses) by major investment category for the three and nine months ended September 30, 2018 and 2017 : 2018 2017 Gains (Losses) Fair Value at Sale Gains (Losses) Fair Value at Sale Three Months Ended September 30, Fixed maturities $ 12 $ 4,864 $ 123 $ 11,368 Equity securities 8 411 1 156 Total realized gains 20 5,275 124 11,524 Fixed maturities (441 ) 46,268 (195 ) 10,517 Equity securities (26 ) 387 — — Total realized losses (467 ) 46,655 (195 ) 10,517 Net realized investment gains (losses) $ (447 ) $ 51,930 $ (71 ) $ 22,041 Nine Months Ended September 30, Fixed maturities $ 68 $ 11,745 $ 263 $ 30,264 Equity securities 517 1,593 8 175 Total realized gains 585 13,338 271 30,439 Fixed maturities (1,233 ) 116,587 (815 ) 47,913 Equity securities (26 ) 387 (10 ) 100 Total realized losses (1,259 ) 116,974 (825 ) 48,013 Net realized investment gains (losses) $ (674 ) $ 130,312 $ (554 ) $ 78,452 The table below summarizes our fixed maturities at September 30, 2018 by contractual maturity periods. Actual results may differ as issuers may have the right to call or prepay obligations, with or without penalties, prior to the contractual maturities of those obligations. September 30, 2018 Cost or Amortized Cost Percent of Total Fair Value Percent of Total Due in one year or less $ 70,131 8.2 % $ 69,785 8.3 % Due after one year through five years 337,014 39.4 % 331,204 39.6 % Due after five years through ten years 164,523 19.3 % 159,481 19.1 % Due after ten years 12,539 1.5 % 12,032 1.4 % Asset and mortgage backed securities 270,433 31.6 % 263,888 31.6 % Total $ 854,640 100.0 % $ 836,390 100.0 % The following table summarizes our net investment income by major investment category: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Fixed maturities $ 5,725 $ 4,111 $ 15,929 $ 10,696 Equity securities 525 375 1,455 940 Cash and cash equivalents 588 285 1,427 445 Other investments 41 124 830 385 Other assets 9 6 24 23 Investment income 6,888 4,901 19,665 12,489 Investment expenses (267 ) (213 ) (756 ) (482 ) Net investment income $ 6,621 $ 4,688 $ 18,909 $ 12,007 Portfolio monitoring We have a comprehensive portfolio monitoring process to identify and evaluate each fixed income security whose carrying value may be other-than-temporarily impaired. For each fixed income security in an unrealized loss position, we determine if the loss is temporary or other-than-temporary. If our management decides to sell the security or determines that it is more likely than not that we will be required to sell the security before recovery of the cost or amortized cost basis for reasons such as liquidity needs, contractual or regulatory requirements, then the security's decline in fair value is considered other-than-temporary and is recorded in earnings. If we have not made the decision to sell the fixed income security and it is more likely than not that we will be required to sell the fixed income security before recovery of its amortized cost basis, we evaluate whether we expect the security to receive cash flows sufficient to recover the entire cost or amortized cost basis of the security. We calculate the estimated recovery value by discounting the best estimate of future cash flows at the security's original or current effective rate, as appropriate, and compare this to the cost or amortized cost of the security. If we do not expect to receive cash flows sufficient to recover the entire cost or amortized cost basis of the fixed income security, the credit loss component of the impairment is recorded in earnings, with the remaining amount of the unrealized loss related to other factors recognized in other comprehensive income. Our portfolio monitoring process includes a quarterly review of all fixed-income securities to identify instances where the fair value of a security compared to its cost or amortized cost is below established thresholds. The process also includes the monitoring of other impairment indicators such as ratings, ratings downgrades and payment defaults. The securities identified, in addition to other securities for which we may have a concern, are evaluated for potential other-than-temporary impairment using information relevant to the collectability or recovery of the security that is reasonably available. Inherent in our evaluation of other-than-temporary impairment for these fixed income securities are assumptions and estimates about the financial condition and future earnings potential of the issue or issuer. Some of the factors that may be considered in evaluating whether a decline in fair value is other-than-temporary are: (1) the financial condition, near-term and long-term prospects of the issue or issuer, including relevant industry specific market conditions and trends, geographic location and implications of rating agency actions and offering prices; (2) the specific reasons that a security is in an unrealized loss position, including overall market conditions which could affect liquidity; and (3) the length of time and extent to which the fair value has been less than amortized cost or cost. The following table presents an aging of our unrealized investment losses by investment class: Less Than Twelve Months Twelve Months or More Number of Securities (1) Gross Unrealized Losses Fair Value Number of Securities (1) Gross Unrealized Losses Fair Value September 30, 2018 U.S. government and agency securities 83 $ 580 $ 48,600 56 $ 1,513 $ 54,114 Foreign governments 5 32 2,966 — — — States, municipalities and political subdivisions 132 1,742 103,690 43 976 30,133 Public utilities 41 672 19,812 6 103 1,976 Corporate securities 481 4,752 217,405 90 1,858 49,688 Mortgage-backed securities 180 4,683 173,692 89 1,615 29,984 Asset backed securities 83 250 51,428 7 2 1,362 Redeemable preferred stocks 8 25 749 2 60 200 Total fixed maturities 1,013 12,736 618,342 293 6,127 167,457 Mutual Fund 1 — 56 — — — Public utilities 8 19 672 — — — Other common stocks 70 305 4,103 1 36 91 Non-redeemable preferred stocks 18 32 1,506 3 2 19 Total equity securities 97 356 6,337 4 38 110 Total 1,110 $ 13,092 $ 624,679 297 $ 6,165 $ 167,567 December 31, 2017 U.S. government and agency securities 40 $ 166 $ 26,979 73 $ 1,075 $ 58,980 States, municipalities and political subdivisions 106 734 91,245 31 389 19,718 Public utilities 16 44 7,052 5 41 1,016 Corporate securities 263 871 134,755 52 338 16,476 Mortgage-backed securities 89 475 76,349 50 477 15,210 Asset-backed securities 18 20 11,682 — — — Redeemable preferred stocks — — — 3 74 303 Total fixed maturities 532 2,310 348,062 214 2,394 111,703 Mutual Funds 1 — 131 — — — Other common stocks 5 47 748 — — — Non-redeemable preferred stocks 4 4 87 — — — Total equity securities 10 51 966 — — — Total 542 $ 2,361 $ 349,028 214 $ 2,394 $ 111,703 (1) This amount represents the actual number of discrete securities, not the number of shares or units of those securities. The numbers are not presented in thousands. During our quarterly evaluations of our securities for impairment, we determined that none of our investments in fixed-income securities that reflected an unrealized loss position were other-than-temporarily impaired. The issuers of our debt securities continue to make interest payments on a timely basis. We do not intend to sell nor is it likely that we would be required to sell the debt securities before we recover our amortized cost basis. Due to the adoption of ASU 2016-01 as of January 1, 2018, equity securities are reported at fair value with changes in fair value recognized in valuation of equity investments and are no longer included in impairment write-downs, change in intent write-downs and sales. During the three and nine months ended September 30, 2018 and 2017 , we recorded no other-than-temporary impairment charges. Fair value measurement Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The hierarchy for inputs used in determining fair value maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Assets and liabilities recorded on our Unaudited Condensed Consolidated Balance Sheets at fair value are categorized in the fair value hierarchy based on the observability of inputs to the valuation techniques as follows: Level 1: Assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market that we can access. Level 2: Assets and liabilities whose values are based on the following: (a) Quoted prices for similar assets or liabilities in active markets; (b) Quoted prices for identical or similar assets or liabilities in markets that are not active; or (c) Valuation models whose inputs are observable, directly or indirectly, for substantially the full term of the asset or liability. Level 3: Assets and liabilities whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. Unobservable inputs reflect our estimates of the assumptions that market participants would use in valuing the assets and liabilities. We estimate the fair value of our investments using the closing prices on the last business day of the reporting period, obtained from active markets such as the NYSE, Nasdaq and NYSE American. For securities for which quoted prices in active markets are unavailable, we use a third-party pricing service that utilizes quoted prices in active markets for similar instruments, benchmark interest rates, broker quotes and other relevant inputs to estimate the fair value of those securities for which quoted prices are unavailable. Our estimates of fair value reflect the interest rate environment that existed as of the close of business on September 30, 2018 and December 31, 2017 . Changes in interest rates subsequent to September 30, 2018 may affect the fair value of our investments. The fair value of our fixed maturities is initially calculated by a third-party pricing service. Valuation service providers typically obtain data about market transactions and other key valuation model inputs from multiple sources and, through the use of proprietary models, produce valuation information in the form of a single fair value for individual fixed income and other securities for which a fair value has been requested. The inputs used by the valuation service providers include, but are not limited to, market prices from recently completed transactions and transactions of comparable securities, interest rate yield curves, credit spreads, liquidity spreads, currency rates and other information, as applicable. Credit and liquidity spreads are typically implied from completed transactions and transactions of comparable securities. Valuation service providers also use proprietary discounted cash flow models that are widely accepted in the financial services industry and similar to those used by other market participants to value the same financial information. The valuation models take into account, among other things, market observable information as of the measurement date, as described above, as well as the specific attributes of the security being valued, including its term, interest rate, credit rating, industry sector and, where applicable, collateral quality and other issue or issuer specific information. Executing valuation models effectively requires seasoned professional judgment and experience. For our Level 3 assets, our internal pricing method is primarily based on models using our share of the net asset value of the limited partnership interests as provided on the financial statements of the investee. In certain circumstances, management may adjust the net asset value when it has sufficient evidence to support applying such adjustments. Any change in the estimated fair value of our fixed-income securities would impact the amount of unrealized gain or loss we have recorded, which could change the amount we have recorded for our investments and other comprehensive income on our Unaudited Condensed Consolidated Balance Sheet as of September 30, 2018 . The following table presents the fair value of our financial instruments measured on a recurring basis by level at September 30, 2018 and December 31, 2017 : Total Level 1 Level 2 Level 3 September 30, 2018 U.S. government and agency securities $ 102,729 $ — $ 102,729 $ — Foreign government 2,966 — 2,966 — States, municipalities and political subdivisions 151,866 — 151,866 — Public utilities 24,142 — 24,142 — Corporate securities 289,596 — 289,596 — Mortgage-backed securities 204,990 — 204,990 — Asset-backed securities 58,898 — 58,898 — Redeemable preferred stocks 1,203 821 382 — Total fixed maturities 836,390 821 835,569 — Mutual funds 51,095 51,095 — — Public utilities 2,357 2,357 — — Other common stocks 37,568 37,568 — — Non-redeemable preferred stocks 2,072 2,072 — — Total equity securities 93,092 93,092 — — Other long-term investments 8,330 300 2,173 5,857 Total investments $ 937,812 $ 94,213 $ 837,742 $ 5,857 December 31, 2017 U.S. government and agency securities $ 92,626 $ — $ 92,626 $ — Foreign government 2,036 — 2,036 — States, municipalities and political subdivisions 201,512 — 201,512 — Public utilities 20,257 — 20,257 — Corporate securities 287,562 — 287,562 — Mortgage-backed securities 143,265 — 143,265 — Asset-backed securities 14,905 — 14,905 — Redeemable preferred stocks 692 692 — — Total fixed maturities 762,855 692 762,163 — Mutual Funds 31,924 31,924 — — Public utilities 1,702 1,702 — — Other common stocks 27,902 27,902 — — Non-redeemable preferred stocks 1,767 1,767 — — Total equity securities 63,295 63,295 — — Other long-term investments 8,381 300 7,447 634 Total investments $ 834,531 $ 64,287 $ 769,610 $ 634 The carrying amounts for the following financial instrument categories approximate their fair values at September 30, 2018 and December 31, 2017 , because of their short-term nature: cash and cash equivalents, accrued investment income, premiums receivable, reinsurance recoverable, reinsurance payable, other assets, and other liabilities. The carrying amount of the notes payable to the Florida State Board of Administration, the Branch Banking & Trust Corporation (BB&T) and our senior notes approximate fair value as the interest rates and terms are variable. The table below presents the rollforward of our Level 3 investments held at fair value during the nine months ended September 30, 2018 : Other Investments December 31, 2017 $ 634 Transfers in 5,507 Partnership income 261 Return of capital (482 ) Unrealized gains in accumulated other comprehensive income (63 ) September 30, 2018 $ 5,857 We are responsible for the determination of fair value and the supporting assumptions and methodologies. We have implemented a system of processes and controls designed to provide assurance that our assets and liabilities are appropriately valued. For fair values received from third parties, our processes are designed to provide assurance that the valuation methodologies and inputs are appropriate and consistently applied, the assumptions are reasonable and consistent with the objective of determining fair value, and the fair values are accurately recorded. At the end of each quarter, we determine whether we need to transfer the fair values of any securities between levels of the fair value hierarchy and, if so, we report the transfer as of the end of the quarter. During the quarter ended September 30, 2018 , we transferred two investments from Level 2 to Level 3 investments, due to changes in the availability of market observable inputs. We used unobservable inputs to derive our estimated fair value for Level 3 investments, and the unobservable inputs are significant to the overall fair value measurement. For our investments in U.S. government securities that do not have prices in active markets, agency securities, state and municipal governments, and corporate bonds, we obtain the fair values from our investment custodians, which use a third-party valuation service. The valuation service calculates prices for our investments in the aforementioned security types on a month-end basis by using several matrix-pricing methodologies that incorporate inputs from various sources. The model the valuation service uses to price U.S. government securities and securities of states and municipalities incorporates inputs from active market makers and inter-dealer brokers. To price corporate bonds and agency securities, the valuation service calculates non-call yield spreads on all issuers, uses option-adjusted yield spreads to account for any early redemption features, and adds final spreads to the U.S. Treasury curve at 3 p.m. (ET) as of quarter end. Since the inputs the valuation service uses in its calculations are not quoted prices in active markets, but are observable inputs, they represent Level 2 inputs. Other investments We acquired investments in limited partnerships, recorded in the other investments line of our Unaudited Condensed Consolidated Balance Sheets and these investments are currently being accounted for at fair value utilizing a net asset value per share equivalent methodology. The estimated fair value of our investments in the limited partnership interests at September 30, 2018 was $8,029,000 . We have fully funded two investments and are still obligated to fund an additional $2,708,000 for the remaining four investments. The information presented in the table below is as of September 30, 2018 : Book Value Unrealized Gain Unrealized Loss Fair Value Limited partnership investments $ 7,769 $ 260 $ — $ 8,029 Certificates of deposit 300 — — 300 Total other investments $ 8,069 $ 260 $ — $ 8,329 Portfolio loans At December 31, 2017 , we held commercial portfolio loans of $20,000,000 . We believe that making sound loans is a necessary and desirable means of employing funds available for investment. Recognizing our obligation to our stockholders, management is expected to seek to develop and make sound, profitable loans that resources permit and that opportunity affords. These were short-term collateralized loans (less than one year), which were repaid in full in April 2018, primarily from cash flows of the borrowers.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Business Combination Disclosure	ACQUISITIONS We account for business acquisitions in accordance with the acquisition method of accounting, which requires, among other things, that most assets acquired, liabilities assumed and earn-out consideration be recognized at their fair values as of the acquisition date. Measurement period adjustments to provisional purchase price allocations are recognized in the period in which they are determined as if the accounting had been completed on the acquisition date. On April 3, 2017, we completed our acquisition of AmCo and its subsidiaries. The transaction was completed through a series of mergers that ultimately resulted in the Company issuing 20,956,355 shares of its common stock as consideration to the equity holders of RDX Holding, LLC, the former parent company of AmCo. As a result of the mergers, AmCo merged with and into a wholly-owned subsidiary of the Company. The acquisition of AmCo supported our growth strategy and further strengthened our overall position in the commercial property and casualty insurance market. Goodwill recorded in the transaction, which reflected the synergies expected from the acquisition and enhanced reinsurance opportunities, is not tax deductible. The operations of AmCo are included in our Unaudited Condensed Consolidated Statements of Comprehensive Income effective April 3, 2017. The final purchase price allocation is as follows: Cash and cash equivalents $ 95,284 Investments 222,920 Premium and agents' receivable 31,439 Reinsurance recoverable 20,230 Prepaid reinsurance premiums 22,544 Intangible assets 30,286 Insurance contract asset 33,812 Goodwill 59,475 Other assets 4,591 Unpaid losses and loss adjustment expenses (60,529 ) Unearned premiums (128,824 ) Reinsurance payable (22,406 ) Deferred taxes (17,093 ) Other liabilities (6,261 ) Total purchase price $ 285,468 The unaudited pro forma financial information below has been prepared as if the acquisition of AmCo had taken place on January 1, 2017. The unaudited pro forma financial information is not necessarily indicative of the results that we would have achieved had the transaction taken place on January 1, 2017, and the unaudited pro forma information does not purport to be indicative of future financial operating results. Nine Months Ended September 30, 2017 As Pro Forma Reported Adjustments Pro Forma Revenues $ 471,834 $ 38,096 $ 509,930 Net income (loss) (16,856 ) 6,712 (10,144 ) Diluted earnings per share (0.47 ) — (0.24 ) The following table summarizes the results of the acquired AmCo operations since the acquisition date that have been included within our unaudited condensed consolidated statements of comprehensive income: January 1, 2018 to September 30, 2018 April 3, 2017 to September 30, 2017 Revenues $ 146,301 $ 93,269 Net income 25,605 1,122

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE Basic earnings per share (EPS) is based on the weighted average number of common shares outstanding for the period, excluding any dilutive common share equivalents. Diluted EPS reflects the potential dilution resulting from the vesting of restricted stock awards. The following table shows the computation of basic and diluted EPS for the three and nine month periods ended September 30, 2018 and 2017 , respectively: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Numerator: Net income attributable to UIHC common stockholders $ (11,708 ) $ (28,012 ) $ 11,361 $ (16,856 ) Denominator: Weighted-average shares outstanding 42,677,893 42,524,400 42,636,515 35,341,994 Effect of dilutive securities — 216,604 154,693 221,038 Weighted-average diluted shares 42,677,893 42,741,004 42,791,208 35,563,032 Earnings available to UIHC common shareholders per share Basic $ (0.27 ) $ (0.66 ) $ 0.27 $ (0.48 ) Diluted $ (0.27 ) $ (0.66 ) $ 0.27 $ (0.47 ) See Note 16 of these Notes to Unaudited Condensed Consolidated Financial Statements for additional information on the stock grants related to dilutive securities.

Property and Equipment, Net

Property and Equipment, Net	9 Months Ended
	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	PROPERTY AND EQUIPMENT, NET Property and equipment, net consisted of the following: September 30, December 31, Land $ 2,114 $ 2,114 Building and building improvements 6,553 5,695 Computer hardware and software 16,980 18,985 Office furniture and equipment 3,024 3,413 Leasehold improvements 20 — Total, at cost 28,691 30,207 Less: accumulated depreciation and amortization (12,108 ) (12,916 ) Property and equipment, net $ 16,583 $ 17,291 Depreciation and amortization expense under property and equipment was $1,819,000 and $723,000 for the three months ended September 30, 2018 and 2017 , respectively, and $3,382,000 and $2,759,000 for the nine months ended September 30, 2018 and 2017 , respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure	GOODWILL AND INTANGIBLE ASSETS Goodwill The carrying amount of goodwill, both at September 30, 2018 and December 31, 2017 , was $73,045,000 . There was no goodwill acquired or disposed of during the three month or nine month periods ended September 30, 2018 . Using a qualitative assessment, we completed our most recent goodwill impairment testing during the fourth quarter of 2017 and determined that there was no impairment in the value of the asset as of December 31, 2017 . No impairment loss in the value of goodwill was recognized during the nine months ended September 30, 2018 . Additionally, there was no accumulated impairment or accumulated amortization related to goodwill at September 30, 2018 or December 31, 2017 . Intangible Assets The following is a summary of intangible assets excluding goodwill recorded as intangible assets on our Unaudited Condensed Consolidated Balance Sheets: September 30, 2018 December 31, 2017 Intangible assets subject to amortization $ 29,160 $ 41,715 Indefinite-lived intangible assets (1) 3,556 3,556 Total $ 32,716 $ 45,271 (1) Indefinite-lived intangible assets are comprised of state insurance and agent licenses, as well as perpetual software licenses. Intangible assets subject to amortization consisted of the following: Weighted-average remaining amortization period (in years) Gross carrying amount Accumulated amortization Net carrying amount September 30, 2018 Value of business acquired — $ 42,788 $ (42,788 ) $ — Agency agreements acquired 7.5 34,661 (10,040 ) 24,621 Trade names acquired 5.4 6,381 (1,842 ) 4,539 Total $ 83,830 $ (54,670 ) $ 29,160 December 31, 2017 Value of business acquired 0.3 $ 42,788 $ (34,335 ) $ 8,453 Agency agreements acquired 8.0 34,661 (6,669 ) 27,992 Trade names acquired 6.0 6,381 (1,111 ) 5,270 Total $ 83,830 $ (42,115 ) $ 41,715 No impairment in the value of amortizing or non-amortizing intangible assets was recognized during the three and nine months ended September 30, 2018 and 2017 . Amortization expense of our intangible assets was $1,365,000 and $9,839,000 for the three months ended September 30, 2018 and 2017 , respectively. Amortization expense of our intangible assets was $12,555,000 and $21,361,000 for the nine months ended September 30, 2018 and 2017 , respectively. Estimated amortization expense of our intangible assets to be recognized by the Company over the next five years is as follows: Year ending December 31, Estimated Amortization Expense Remaining 2018 $ 1,365 2019 5,355 2020 4,267 2021 3,555 2022 3,246 2023 3,246

Reinsurance

Reinsurance	9 Months Ended
	Sep. 30, 2018
Reinsurance Disclosures [Abstract]
Reinsurance	REINSURANCE Our reinsurance program is designed, utilizing our risk management methodology, to address our exposure to catastrophes. According to the Insurance Service Office (ISO), a catastrophe loss is defined as a single unpredictable incident or series of closely related incidents that result in $25,000,000 or more in U.S. industry-wide direct insured losses to property and that affect a significant number of policyholders and insurers (ISO catastrophes). In addition to ISO catastrophes, we also include as catastrophes those events (non-ISO catastrophes), which may include losses, that we believe are, or will be, material to our operations, either in amount or in number of claims made. Our program provides reinsurance protection for catastrophes including hurricanes, tropical storms and tornadoes. These reinsurance agreements are part of our catastrophe management strategy, which is intended to provide our stockholders an acceptable return on the risks assumed in our property business, and to reduce variability of earnings, while providing protection to our policyholders. Effective June 1, 2018, UPC Insurance, through our wholly-owned insurance subsidiaries ACIC, UPC, FSIC, IIC and BlueLine, entered into reinsurance agreements with private reinsurers and with the Florida State Board of Administration, which administers the Florida Hurricane Catastrophe Fund (FHCF). These agreements provide coverage for catastrophe losses from named or numbered windstorms and earthquakes in all states in which UPC Insurance operates except for the agreement with FHCF, which only provides coverage in Florida against storms that the National Hurricane Center designates as hurricanes. Highlights of the coverage within these contracts include: • Increased frequency and severity protection, with an overall program exhaustion point excess of $3,100,000,000 ; ◦ Sufficient coverage for approximately a single 1-in-400 year event; ◦ Sufficient coverage for a 1-in-100 year event followed by a 1-in-50 year event in the same season; • Lower per occurrence retention levels which include all BlueLine business; ◦ First event retention of $60,000,000 in Florida and $25,000,000 outside of Florida which, as a percentage of the group equity, represents approximately 11% and 4.6% , respectively; ◦ $25,000,000 for second event in all states; • Successful completion of Armor Re II CAT Bond providing $100,000,000 of limit on a multi-year basis; • Coverage from 41 reinsurers with 93% of the open market limit placed on a fully collateralized basis or with reinsurers having an A+ or better A.M. Best financial strength rating; and • Up to $262,500,000 of multi-year limit including the CAT Bond limit. For the FHCF reimbursement contracts effective June 1, 2018, UPC Insurance has elected a 45% coverage for all its insurance subsidiaries with Florida exposure. We estimate the total mandatory FHCF layer will provide approximately $907,000,000 of aggregate coverage with varying retentions and limits among the three FHCF contracts that all inure to the benefit of the open market coverage secured from private reinsurers. The $2,185,000,000 of aggregate open market catastrophe reinsurance coverage is structured into multiple layers with a cascading feature that all layers drop down as layers below them are exhausted. Any remaining unused layer protection drops down for subsequent events until exhausted, ensuring there are no potential gaps in coverage up to the $3,100,000,000 program exhaustion point. Effective January 1, 2018, UPC Insurance, through its wholly-owned insurance subsidiaries UPC, ACIC, IIC and FSIC, renewed the aggregate excess of loss agreement with a private reinsurer. The treaty provides coverage for all catastrophe perils other than hurricanes, tropical storms, tropical depressions and earthquakes. Under this agreement, we will retain, in the aggregate, 100% of those losses up to 4.75% of the covered companies’ gross earned premium. The reinsurer will then be liable for all losses in excess of 4.75% of the covered companies’ gross earned premium in the aggregate not to exceed $20,000,000 over the term of the treaty. Recoveries under this treaty will be calculated quarterly based on the cumulative gross earned premium. We ceded $20,000,000 of catastrophe losses to this treaty for the nine months ended September 30, 2018. Reinsurance recoveries under this agreement may change in future periods as the cumulative subject gross earned premiums and eligible gross catastrophe losses incurred are recognized in subsequent calendar quarters during 2018 in accordance with the terms of the agreement. No allowance has been recorded against the $20,000,000 reinsurance recoverable at September 30, 2018 since future catastrophe losses are inherently unpredictable and cannot be reasonably estimated. Effective December 31, 2017, UPC Insurance, through our wholly-owned insurance subsidiary UPC, replaced its quota share agreement with private reinsurers. The quota share agreement has a term of 12 months and a cession rate of 20% for all subject business. The quota share agreement provides coverage for all catastrophe perils and attritional losses. For all catastrophe perils, the quota share agreement provides ground-up protection effectively reducing our retention for catastrophe losses. Quota share reinsurers’ participation in paying attritional losses is subject to an attritional loss ratio cap. We amortize our prepaid reinsurance premiums over the annual agreement period, and we record that amortization in ceded premiums earned on our Unaudited Condensed Consolidated Statements of Comprehensive Income. The table below summarizes the amounts of our ceded premiums written under the various types of agreements, as well as the amortization of prepaid reinsurance premiums: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Quota share $ (24,852 ) $ (24,768 ) $ (72,824 ) $ (71,549 ) Excess-of-loss (28,450 ) (3,538 ) (392,541 ) (329,224 ) Equipment & identity theft (2,375 ) (2,606 ) (7,126 ) (7,275 ) Flood (5,897 ) (5,559 ) (15,136 ) (14,319 ) Ceded premiums written $ (61,574 ) $ (36,471 ) $ (487,627 ) $ (422,367 ) Increase (decrease) in ceded unearned premiums (71,052 ) (79,036 ) 122,616 130,012 Ceded premiums earned $ (132,626 ) $ (115,507 ) $ (365,011 ) $ (292,355 ) Current year catastrophe losses disaggregated between named and numbered storms and all other catastrophe loss events are shown in the following table: 2018 2017 Number of Events Incurred Loss and LAE (1) Combined Ratio Impact Number of Events Incurred Loss and LAE (1) Combined Ratio Impact Three Months Ended September 30, Current period catastrophe losses incurred Named and numbered storms 3 $ 25,019 14.6 % 4 $ 83,460 54.7 % All other catastrophe loss events 6 9,574 5.6 % 15 (845 ) (0.6 )% Total 9 $ 34,593 20.2 % 19 $ 82,615 54.1 % Nine Months Ended September 30, Current period catastrophe losses incurred Named and numbered storms 4 $ 26,233 5.2 % 4 $ 83,724 20.0 % All other catastrophe loss events 22 32,017 6.3 % 15 31,301 7.5 % Total 26 $ 58,250 11.5 % 19 $ 115,025 27.5 % (1) Incurred loss and LAE (as defined below) is equal to losses and LAE paid plus the change in case and incurred but not reported reserves. Shown net of losses ceded to reinsurers. Incurred loss and LAE and number of events includes the development on storms during the year in which it occurred. We collected cash recoveries under our reinsurance agreements totaling $66,278,000 and $20,419,000 for the three -month periods ended September 30, 2018 and 2017 , respectively, and $340,316,000 and $40,984,000 for the nine-month periods ended September 30, 2018 and 2017 , respectively. We write flood insurance under an agreement with the National Flood Insurance Program. We cede 100% of the premiums written and the related risk of loss to the federal government. We earn commissions for the issuance of flood policies based upon a fixed percentage of net written premiums and the processing of flood claims based upon a fixed percentage of incurred losses, and we can earn additional commissions by meeting certain growth targets for the number of in-force policies. We recognized commission revenue from our flood program of $408,000 and $308,000 for the three -month periods ended September 30, 2018 and 2017 , respectively, and $1,194,000 and $905,000 for the nine -month periods ended September 30, 2018 and 2017 , respectively.

Liability for Unpaid Losses and

Liability for Unpaid Losses and Loss Adjustment Expenses	9 Months Ended
	Sep. 30, 2018
Insurance [Abstract]
Short-Duration Insurance and Deposit Contracts	LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSE (LAE) We determine the reserve for unpaid losses on an individual case basis for all incidents reported. The liability also includes amounts for incurred but not reported (IBNR) claims as of the balance sheet date. The table below shows the analysis of our reserve for unpaid losses for the nine months ended September 30, 2018 and 2017 on a GAAP basis: September 30, 2018 2017 Balance at January 1 $ 482,232 $ 140,855 Less: reinsurance recoverable on unpaid losses 305,673 18,724 Net balance at January 1 $ 176,559 $ 122,131 Acquisition of AmCo reserves (net of reinsurance recoverables of $19,945) — 40,583 Incurred related to: Current year 290,600 296,217 Prior years (4,207 ) (2,819 ) Total incurred $ 286,393 $ 293,398 Paid related to: Current year 163,589 160,952 Prior years 102,750 84,497 Total paid $ 266,339 $ 245,449 Net balance at September 30 $ 196,613 $ 210,663 Plus: reinsurance recoverable on unpaid losses 332,229 471,498 Balance at September 30 $ 528,842 $ 682,161 Composition of reserve for unpaid losses and LAE: Case reserves $ 259,678 $ 289,938 IBNR reserves 269,164 392,223 Balance at September 30 $ 528,842 $ 682,161 Based upon our internal analysis and our review of the statement of actuarial opinion provided by our actuarial consultants, we believe that the reserve for unpaid losses reasonably represents the amount necessary to pay all claims and related expenses which may arise from incidents that have occurred as of the balance sheet date. As reflected by our losses incurred related to prior years, the f avorable development experienced at September 30, 2018 and 2017, respectively, was primarily the result of the incurrence of fewer losses than expected, as compared to those same periods in the 2017 and 2016 accident years, respectively.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Long-term Debt	LONG-TERM DEBT Long-Term Debt The table below presents all long-term debt outstanding as of September 30, 2018 and December 31, 2017 : Effective Interest Rate Carrying Value at Maturity September 30, 2018 December 31, 2017 $150M Senior Notes Payable December 15, 2027 6.25% $ 150,000 $ 150,000 Florida State Board of Administration Note Payable July 1, 2026 2.84% 9,412 10,000 BB&T Term Note Payable May 26, 2031 3.75% 4,391 4,651 Total long-term debt $ 163,803 $ 164,651 $150M Senior Notes Payable On December 13, 2017, we issued $150,000,000 of senior notes (the $150M senior notes) that will mature in 10 years and bear interest at a rate equal to 6.25% per annum payable semi-annually on each June 15 and December 15, commencing June 15, 2018. The $150M senior notes are senior unsecured obligations of the Company. We may redeem the $150M senior notes at our option, at any time and from time to time in whole or in part, at a redemption price equal to the greater of (i) 100% of the principal amount of the notes to be redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon from the date of redemption to September 15, 2027. On or after that date, we may redeem the $150M senior notes at par. Florida State Board of Administration Note Payable On September 22, 2006, we issued a $20,000,000 , 20 -year note payable to the Florida State Board of Administration (the SBA note). For the first three years of the SBA note we were required to pay interest only. On October 1, 2009, we began to repay the principal in addition to interest. The note bears an annual interest rate equivalent to the 10-year U.S. Treasury Bond rate. The rate will be adjusted quarterly for the term of the SBA note based on the 10-year Constant Maturity Treasury rate. BB&T Term Note Payable On May 26, 2016, we issued a $5,200,000 , 15 -year term note payable to BB&T (the BB&T note) with the intent to use the funds to purchase, renovate, furnish and equip our home office. The note bears interest at 1.65% in excess of the one-month LIBOR. In the event of default, BB&T may, among other things, declare its loan immediately due and payable, require us to pledge additional collateral to the bank, and take possession of and foreclose upon our home office, which has been pledged to the bank as security for the loan. Financial Covenants The $150M senior notes, SBA note and BB&T note contain representations and warranties, conditions and covenants. If these requirements are not met, all amounts outstanding or otherwise owed could become due and payable immediately and other limitations could be placed on our ability to use any available borrowing capacity. At September 30, 2018 , we were in compliance with all covenants as specified in the $150M senior notes, SBA note and BB&T note. Refer to Part I; Item 2 for additional information regarding our financial covenants. Debt Issuance Costs The table below presents the rollforward of our debt issuance costs paid, in conjunction with the debt instruments described above, during the nine months ended September 30, 2018 and 2017: 2018 2017 Balance at January 1, $ 3,287 $ 549 Additions 63 — Amortization (255 ) (86 ) Balance at September 30, $ 3,095 $ 463

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES We are involved in claims-related legal actions arising in the ordinary course of business. We accrue amounts resulting from claims-related legal actions in unpaid losses and LAE during the period that we determine an unfavorable outcome becomes probable and we can estimate the amounts. Management makes revisions to our estimates based on its analysis of subsequent information that we receive regarding various factors, including: (i) per claim information; (ii) company and industry historical loss experience; (iii) judicial decisions and legal developments in the awarding of damages, and (iv) trends in general economic conditions, including the effects of inflation. At September 30, 2018 , we were not involved in any material non-claims-related legal actions. See Note 10 of these Notes to Unaudited Condensed Consolidated Financial Statements for information regarding commitments related to long-term debt, and Note 12 of these Notes to Unaudited Condensed Consolidated Financial Statements for information regarding commitments related to regulatory actions.

Statutory Accounting and Regula

Statutory Accounting and Regulation	9 Months Ended
	Sep. 30, 2018
Insurance [Abstract]
Statutory and Accounting Regulation	STATUTORY ACCOUNTING AND REGULATION The insurance industry is heavily regulated. State laws and regulations, as well as national regulatory agency requirements, govern the operations of all insurers such as our insurance subsidiaries. The various laws and regulations require that insurers maintain minimum amounts of statutory surplus and risk-based capital, restrict insurers' ability to pay dividends, specify allowable investment types and investment mixes, and subject insurers to assessments. Our insurance subsidiaries, UPC, ACIC and JIC are domiciled in Florida, while FSIC and IIC are domiciled in Hawaii and New York, respectively. At September 30, 2018 , and during the three and nine months then ended, our insurance subsidiaries met all regulatory requirements of the states in which they operate. In March 2018, we received a recoupable assessment for $570,000 from the Texas Fair Plan Association. In September 2018, we received an assessment for $894,000 from North Carolina Joint Underwriting Association. We did not receive any additional significant assessments from regulatory authorities in the states in which our insurance subsidiaries operate. The National Association of Insurance Commissioners (NAIC) has Risk-Based Capital (RBC) guidelines for insurance companies that are designed to assess capital adequacy and to raise the level of protection that statutory surplus provides for policyholders. Most states, including Florida, Hawaii and New York, have enacted statutory requirements adopting the NAIC RBC guidelines, and insurers having less statutory surplus than required will be subject to varying degrees of regulatory action, depending on the level of capital inadequacy. State insurance regulatory authorities could require an insurer to cease operations in the event the insurer fails to maintain the required statutory capital. The state laws of Florida, Hawaii and New York permit an insurer to pay dividends or make distributions out of that part of statutory surplus derived from net operating profit and net realized capital gains. The state laws further provide calculations to determine the amount of dividends or distributions that can be made without the prior approval of the insurance regulatory authorities in those states and the amount of dividends or distributions that would require prior approval of the insurance regulatory authorities in those states. Statutory RBC requirements may further restrict our insurance subsidiaries' ability to pay dividends or make distributions if the amount of the intended dividend or distribution would cause statutory surplus to fall below minimum RBC requirements. The SBA note is considered a surplus note pursuant to statutory accounting principles. As a result, UPC is subject to the authority of the Insurance Commissioner of the State of Florida with regard to its ability to repay principal and interest on the SBA note. Any payment of principal or interest requires permission from the insurance regulatory authority. We have reported our insurance subsidiaries' assets, liabilities and results of operations in accordance with GAAP, which varies from statutory accounting principles prescribed or permitted by state laws and regulations, as well as by general industry practices. The following items are principal differences between statutory accounting and GAAP: • Statutory accounting requires that we exclude certain assets, called non-admitted assets, from the balance sheet. • Statutory accounting requires us to expense policy acquisition costs when incurred, while GAAP allows us to defer to the extent realizable, and amortize policy acquisition costs over the estimated life of the policies. • Statutory accounting requires that surplus notes, also known as surplus debentures, be recorded in statutory surplus, while GAAP requires us to record surplus notes as a liability. • Statutory accounting allows certain investments to be carried at amortized cost or fair value based on the rating received from the Securities Valuation Office of the NAIC, while they are recorded at fair value for GAAP because the investments are held as available for sale. • Statutory accounting allows ceding commission income to be recognized when written if the cost of acquiring and renewing the associated business exceeds the ceding commissions, but under GAAP such income is deferred and recognized over the coverage period. • Statutory accounting requires that unearned premiums and loss reserves are presented net of related reinsurance rather than on a gross basis under GAAP. • Statutory accounting requires that a provision for reinsurance liability be established for reinsurance recoverable on paid losses aged over 90 days and for unsecured amounts recoverable from unauthorized reinsurers. Under GAAP there is no charge for uncollateralized amounts ceded to a company not licensed in the insurance subsidiary's domiciliary state and a reserve for uncollectable reinsurance is charged through earnings rather than surplus or equity. • Statutory accounting requires an additional admissibility test and the change in deferred income tax is reported directly in capital and surplus, rather than being reported as a component of income tax expense under GAAP. Our insurance subsidiaries must each file with the various insurance regulatory authorities an “Annual Statement” which reports, among other items, statutory net income (loss) and surplus as regards policyholders, which is called stockholders' equity under GAAP. For the three and nine months ended September 30, 2018 , our combined recorded statutory net loss was $13,134,000 and net income was $8,342,000 , respectively. For the three and nine months ended September 30, 2017 , our combined recorded statutory net loss was $24,828,000 and $20,238,000 , respectively. Our insurance subsidiaries must maintain capital and surplus ratios or balances as determined by the regulatory authority of the states in which they are domiciled. At September 30, 2018 , we have met these requirements. The amount of surplus as regards policyholders for our regulated entities at September 30, 2018 and December 31, 2017 , was $483,828,000 and $389,384,000 , respectively.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS Groelle & Salmon, PA One of our former executive officers who acted as an executive officer during the period covered by this Form 10-Q, Ms. Salmon, is a former partner at the law firm of Groelle & Salmon, PA, where her spouse remains partner and co-owner. Groelle & Salmon, PA provides legal representation to us related to our claims litigation, and also provided representation to us for several years prior to Ms. Salmon joining UPC Insurance in 2014. During the three months ended September 30, 2018 and 2017 , Groelle & Salmon, PA billed us approximately $982,000 and $871,000 , respectively. During the nine months ended September 30, 2018 and 2017 , Groelle & Salmon, PA billed us approximately $2,407,000 and $2,513,000 , respectively. Ms. Salmon's spouse has a 50% interest in these billings, or approximately $491,000 and $436,000 , for the three months ended September 30, 2018 and 2017 , respectively, and approximately $1,204,000 and $1,257,000 , for the nine months ended September 30, 2018 and 2017 , respectively. Effective September 7, 2018, Ms. Salmon stepped down from her role at UPC Insurance. AmRisc, LLC AmRisc, a managing general agent, handles the underwriting, claims processing, premium collection and reinsurance review for AmCo. R. Daniel Peed, Vice Chairman of our Board of Directors (Board), beneficially owns approximately 7.7% of AmRisc and is also the Chief Executive Officer of AmRisc. In accordance with the managing general agent underwriting contract with AmRisc, we recorded $55,476,000 and $277,239,000 of gross written premiums for the three and nine -month periods ended September 30, 2018 , respectively, and $41,311,000 for the three -month period ended September 30, 2017 , resulting in fees and commission (including a profit commission) of $18,162,000 and $75,012,000 , for the three and nine -month periods ended September 30, 2018 , respectively, and $12,011,000 for the three -month period ended September 30, 2017 , due to AmRisc. Receivables are stated net of the fees and commission due under the contract. In addition to the direct premiums written, we recorded $750,000 and $4,116,000 in ceded premiums to AmRisc as a reinsurance intermediary for the three and nine -month periods ended September 30, 2018 , respectively, and $640,000 for the three -month period ended September 30, 2017 . We also incurred $5,000 and $14,000 , respectively, during the three and nine -month periods ended September 30, 2018 , respectively, and $4,000 for the three -month period ended September 30, 2017 , for rent under a sublease agreement with AmRisc. Net premiums receivable (net of commissions) of $28,244,000 were due from AmRisc as of September 30, 2018 . These premiums were paid by AmRisc to our premium trust account by wire transfer within 15 days of collection pursuant to the underwriting contract with AmRisc.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	ACCUMULATED OTHER COMPREHENSIVE INCOME We report changes in other comprehensive income items within comprehensive income on the Unaudited Condensed Consolidated Statements of Comprehensive Income, and we include accumulated other comprehensive income as a component of stockholders' equity on our Unaudited Condensed Consolidated Balance Sheets. The table below details the components of accumulated other comprehensive income at period end: Pre-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount December 31, 2017 $ 12,044 $ (2,823 ) $ 9,221 Reclassification adjustment for adoption of ASU 2016-01 (1) (12,300 ) 2,962 (9,338 ) Adjusted balance at January 1, 2018 (256 ) 139 (117 ) Changes in net unrealized gains on investments (18,407 ) 4,316 (14,091 ) Reclassification adjustment for realized gains 674 (168 ) 506 September 30, 2018 $ (17,989 ) $ 4,287 $ (13,702 ) (1) Reflects the fair value changes on equity securities as of December 31, 2017, which are reclassified under the new accounting guidance. Refer to Note 2 in these Notes to Unaudited Condensed Consolidated Financial Statements for further information.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2018
Stockholders' Equity Note [Abstract]
Stockholders' Equity	STOCKHOLDERS' EQUITY Our Board declared dividends on our outstanding shares of common stock to stockholders of record as follows for the periods presented (in thousands except per share amounts): Nine Months Ended September 30, 2018 2017 Per Share Amount Aggregate Amount Per Share Amount Aggregate Amount First Quarter $ 0.06 $ 2,565 $ 0.06 $ 1,301 Second Quarter $ 0.06 $ 2,565 $ 0.06 $ 2,561 Third Quarter $ 0.06 $ 2,569 $ 0.06 $ 2,564 See Note 16 in these Notes to Unaudited Condensed Consolidated Financial Statements for information regarding stock-based compensation activity.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION We account for stock-based compensation under the fair value recognition provisions of ASC Topic 718 - Compensation - Stock Compensation . We recognize stock-based compensation cost over the award’s requisite service period on a straight-line basis for time-based restricted stock grants and performance-based restricted stock grants. We record forfeitures as they occur for all stock-based compensation. The following table presents our total stock-based compensation expense: Three Months Ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Employee stock-based compensation expense Pre-tax $ 248 $ 393 $ 736 $ 1,179 Post-tax (1) 196 310 581 931 Director stock-based compensation expense Pre-tax 379 244 940 752 Post-tax (1) 299 193 743 594 (1) The after tax amounts are determined using the 21% corporate federal tax rate. We had approximately $2,636,000 of unrecognized stock compensation expense at September 30, 2018 related to non-vested stock-based compensation granted, which we expect to recognize over a weighted-average period of approximately 2.64 years. We had approximately $906,000 of unrecognized director stock-based compensation expense at September 30, 2018 related to non-vested director stock-based compensation granted, which we expect to recognize over a weighted-average period of approximately 0.6 years. Restricted stock, restricted stock units and performance stock units Stock-based compensation cost for restricted stock awards, restricted stock units and performance stock units is measured based on the closing fair market value of our common stock on the date of grant which vest in equal installments over the requisite service period of typically three years. Restricted stock awards granted to non-employee directors vest over a one-year period. Each restricted stock unit and performance stock unit represents our obligation to deliver to the holder one share of common stock upon vesting. Performance-based restricted stock grants vest based on return on average equity compared to a defined group of peer companies. On the grant date, we issue the target number of performance stock units. They are subject to forfeitures if performance goals are not met. The actual number of performance stock units earned can vary from zero to 150 percent of the target for the 2018 awards. We granted 88,392 and 174,602 shares of restricted common stock during the three and nine -month periods ended September 30, 2018 , respectively, which had a weighted-average grant date fair value of $20.44 and $20.07 per share, respectively. We granted zero shares of restricted common stock during the three-month period ended September 30, 2017. We granted 155,122 shares of restricted common stock during the nine -month period ended September 30, 2017 , which had a weighted-average grant date fair value of $15.57 per share. The following table presents certain information related to the activity of our non-vested common stock grants: Number of Restricted Shares Weighted Average Grant Date Fair Value Outstanding as of December 31, 2017 212,094 $ 16.44 Granted 174,602 20.07 Less: Forfeited 17,077 18.07 Less: Vested 139,183 16.38 Outstanding as of September 30, 2018 230,436 $ 19.11 Stock options Stock option fair value was estimated on the grant date using the Black-Scholes-Merton formula. Stock options vest in equal installments over the requisite service period of typically three years. The following weighted-average assumptions were used to value the stock options granted: 2018 Expected annual dividend yield 1.17 % Expected volatility 41.31 % Risk-free interest rate 2.98 % Expected term 6 years Expected annual dividend yield is based on the current quarterly dividend of $0.06 per share and the stock price on the grant date. The expected volatility is a historical volatility calculated based on the daily closing prices over a period equal to the expected term. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the grant date. Expected term takes into account the three-year graded vesting term and the 10-year contractual term of the option. The following table presents certain information related to the activity of our non-vested stock option grants: Number of Stock Options Weighted Average Grant Date Fair Value Weighted Average Exercise Prices Outstanding as of December 31, 2017 — $ — $ — Granted 29,464 8.01 20.44 Less: Forfeited — — — Less: Vested — — — Outstanding as of September 30, 2018 29,464 $ 8.01 $ 20.44 Exercisable as of September 30, 2018 — $ — $ —

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On October 5, 2018, the Company made a capital contribution of $25,000,000 to FSIC. On October 8, 2018 Hurricane Michael made landfall in the Florida panhandle as a Category 4 storm. Our preliminary estimate of pre-tax retained losses is between $25,000,000 and $35,000,000 , net of reinsurance recoverable, for this event. On November 6, 2018, our Board declared a $0.06 per share quarterly cash dividend payable on November 27, 2018, to stockholders of record on November 20, 2018. On November 6, 2018 ACIC and IIC paid dividends of $50,000,000 and $1,764,000 , respectively, to the Company.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Income Taxes	As of September 30, 2018, we have not fully completed our accounting for the tax effects of the enactment of the legislation commonly known as the Tax Cuts and Jobs Act of 2017 (Tax Act) with regards to the deductibility of compensation expense for certain covered executives due to uncertainty surrounding the appropriate tax treatment of outstanding performance-based awards and the grandfather rule for existing executive compensation agreements and the uncertainty surrounding the discount factors to be applied for loss reserve discounting. The U.S. Treasury Department and the Internal Revenue Service has recently issued further clarification and guidance on the deductibility of compensation expense that we are currently reviewing for potential impact on our accounting and disclosures. Interpretive guidance of the Tax Act will be received throughout 2018, and we expect to update our estimates and our disclosure on a quarterly basis as interpretive guidance is received within each quarter that it is received.
Compensation Related Costs	In May 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting (ASU 2017-09). This standard provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU 2017-09 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted for certain requirements. We did not early adopt and the new guidance did not impact the way in which we account for share-based payment transactions. Therefore, the adoption as of January 1, 2018 had no impact on our results of operations.
Restricted Cash ASU 2016-18	In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18). This standard provides guidance on the presentation of restricted cash in the statement of cash flows. We are required to explain the changes during a reporting period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents in the statement of cash flows. We retrospectively adopted this standard on April 1, 2018. The adoption of this new accounting standard impacted the presentation of our Unaudited Condensed Consolidated Statement of Cash Flows but had no effect on our results of operations. The restricted cash on our Condensed Consolidated Balance Sheets at September 30, 2018 and December 31, 2017 represents cash that is held in trust for assumed business and cash held in deposit accounts to satisfy state statutory deposit requirements.
Investment ASU 2016-01	In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). This update substantially revises standards for the recognition, measurement and presentation of financial instruments. This standard revised our accounting related to (1) the classification and measurement of investments in equity securities and (2) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amended certain disclosure requirements associated with the fair value of financial instruments. ASU 2016-01 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted for certain requirements. We adopted this standard as of January 1, 2018, which resulted in a reclassification of a $9,338,000 gain, net of tax, on equity securities from accumulated other comprehensive income to retained earnings on our condensed consolidated financial statements. Refer to Note 14 in these Notes to Unaudited Condensed Consolidated Financial Statements for a reconciliation.
Revenue from Contract with Customer	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09). Insurance contracts are excluded from the scope of this standard. Under the standard, guidance is provided on revenue recognition for entities that enter into contracts with customers to transfer goods or services or enter into contracts for the transfer of nonfinancial assets. The transaction price is attributed to underlying performance obligations in the contract and revenue is recognized as the entity satisfies the performance obligation and transfers control of the good or service to the customer. ASU 2014-09 is effective beginning in the first quarter of 2018. We adopted this standard as of January 1, 2018. The adoption of this new accounting standard did not have an impact on our condensed consolidated financial statements and related disclosures.
Pending Accounting Pronouncements	Pending Accounting Pronouncements We have evaluated recent accounting pronouncements that have had or may have a significant effect on our financial statements or on our disclosures. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). This update modifies the existing disclosure requirements on fair value measurements in Topic 820 by changing requirements regarding Level 1, Level 2 and Level 3 investments. ASU 2018-13 is effective for annual reporting periods beginning after December 15, 2019, including interim periods within those annual periods, with early adoption permitted. Entities are permitted to early adopt any removed or modified disclosures of ASU 2018-13 immediately and delay the adoption of the additional disclosures until their effective date. We have early adopted the guidance on removed and modified disclosures. We do not intend to early adopt the additional disclosures and are assessing the impact of retrospectively adopting the additions from this new accounting standard on our fair value disclosures. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). This update simplifies the manner in which an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. ASU 2017-07 is effective for annual periods beginning after December 15, 2019, including interim periods within those annual periods, with early adoption permitted for certain requirements. We do not intend to early adopt and are assessing the impact of prospectively adopting this new accounting standard on our condensed consolidated financial statements and related disclosures. Any impact of the standard on our condensed consolidated financial statements and related disclosures will be dependent on market conditions of the reporting units at the time of adoption. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (ASU 2016-02). This update is intended to replace existing lease guidance by requiring a lessee to recognize substantially all leases (whether operating or finance leases) on the balance sheet as a right-of-use asset and an associated lease liability. Short-term leases of 12 months or less are excluded from this amendment. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. We do not intend to early adopt and are assessing the impact of adopting this new accounting standard on our condensed consolidated financial statements and related disclosures using a modified retrospective approach upon adoption. We are currently quantifying the expected recognition on our balance sheet for a right to use asset and a lease liability as required by this standard.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The following table details fixed maturity available-for-sale and equity securities, by major investment category, at September 30, 2018 and December 31, 2017 : Cost or Adjusted/Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2018 U.S. government and agency securities $ 104,822 $ — $ 2,093 $ 102,729 Foreign government 2,998 — 32 2,966 States, municipalities and political subdivisions 154,195 389 2,718 151,866 Public utilities 24,898 19 775 24,142 Corporate securities 296,009 197 6,610 289,596 Mortgage-backed securities 211,288 — 6,298 204,990 Asset backed securities 59,145 5 252 58,898 Redeemable preferred stocks 1,285 3 85 1,203 Total fixed maturities $ 854,640 $ 613 $ 18,863 $ 836,390 Mutual funds $ 44,589 $ 6,506 $ — $ 51,095 Public utilities 2,045 331 19 2,357 Other common stocks 27,016 10,893 341 37,568 Non-redeemable preferred stocks 2,098 8 34 2,072 Total equity securities $ 75,748 $ 17,738 $ 394 $ 93,092 December 31, 2017 U.S. government and agency securities $ 93,827 $ 40 $ 1,241 $ 92,626 Foreign government 2,022 14 — 2,036 States, municipalities and political subdivisions 200,706 1,929 1,123 201,512 Public utilities 20,215 127 85 20,257 Corporate securities 287,025 1,746 1,209 287,562 Mortgage-backed securities 143,982 235 952 143,265 Asset-backed securities 14,902 23 20 14,905 Redeemable preferred stocks 755 11 74 692 Total fixed maturities $ 763,434 $ 4,125 $ 4,704 $ 762,855 Mutual fund $ 29,079 $ 2,845 $ — $ 31,924 Public utilities 1,343 359 — 1,702 Other common stocks 18,856 9,093 47 27,902 Non-redeemable preferred stocks 1,718 53 4 1,767 Total equity securities $ 50,996 $ 12,350 $ 51 $ 63,295
Schedule of Realized Gain (Loss)	The following table details our realized gains (losses) by major investment category for the three and nine months ended September 30, 2018 and 2017 : 2018 2017 Gains (Losses) Fair Value at Sale Gains (Losses) Fair Value at Sale Three Months Ended September 30, Fixed maturities $ 12 $ 4,864 $ 123 $ 11,368 Equity securities 8 411 1 156 Total realized gains 20 5,275 124 11,524 Fixed maturities (441 ) 46,268 (195 ) 10,517 Equity securities (26 ) 387 — — Total realized losses (467 ) 46,655 (195 ) 10,517 Net realized investment gains (losses) $ (447 ) $ 51,930 $ (71 ) $ 22,041 Nine Months Ended September 30, Fixed maturities $ 68 $ 11,745 $ 263 $ 30,264 Equity securities 517 1,593 8 175 Total realized gains 585 13,338 271 30,439 Fixed maturities (1,233 ) 116,587 (815 ) 47,913 Equity securities (26 ) 387 (10 ) 100 Total realized losses (1,259 ) 116,974 (825 ) 48,013 Net realized investment gains (losses) $ (674 ) $ 130,312 $ (554 ) $ 78,452
Investments Classified by Contractual Maturity Date	The table below summarizes our fixed maturities at September 30, 2018 by contractual maturity periods. Actual results may differ as issuers may have the right to call or prepay obligations, with or without penalties, prior to the contractual maturities of those obligations. September 30, 2018 Cost or Amortized Cost Percent of Total Fair Value Percent of Total Due in one year or less $ 70,131 8.2 % $ 69,785 8.3 % Due after one year through five years 337,014 39.4 % 331,204 39.6 % Due after five years through ten years 164,523 19.3 % 159,481 19.1 % Due after ten years 12,539 1.5 % 12,032 1.4 % Asset and mortgage backed securities 270,433 31.6 % 263,888 31.6 % Total $ 854,640 100.0 % $ 836,390 100.0 %
Investment Income	The following table summarizes our net investment income by major investment category: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Fixed maturities $ 5,725 $ 4,111 $ 15,929 $ 10,696 Equity securities 525 375 1,455 940 Cash and cash equivalents 588 285 1,427 445 Other investments 41 124 830 385 Other assets 9 6 24 23 Investment income 6,888 4,901 19,665 12,489 Investment expenses (267 ) (213 ) (756 ) (482 ) Net investment income $ 6,621 $ 4,688 $ 18,909 $ 12,007
Schedule of Unrealized Loss on Investments	The following table presents an aging of our unrealized investment losses by investment class: Less Than Twelve Months Twelve Months or More Number of Securities (1) Gross Unrealized Losses Fair Value Number of Securities (1) Gross Unrealized Losses Fair Value September 30, 2018 U.S. government and agency securities 83 $ 580 $ 48,600 56 $ 1,513 $ 54,114 Foreign governments 5 32 2,966 — — — States, municipalities and political subdivisions 132 1,742 103,690 43 976 30,133 Public utilities 41 672 19,812 6 103 1,976 Corporate securities 481 4,752 217,405 90 1,858 49,688 Mortgage-backed securities 180 4,683 173,692 89 1,615 29,984 Asset backed securities 83 250 51,428 7 2 1,362 Redeemable preferred stocks 8 25 749 2 60 200 Total fixed maturities 1,013 12,736 618,342 293 6,127 167,457 Mutual Fund 1 — 56 — — — Public utilities 8 19 672 — — — Other common stocks 70 305 4,103 1 36 91 Non-redeemable preferred stocks 18 32 1,506 3 2 19 Total equity securities 97 356 6,337 4 38 110 Total 1,110 $ 13,092 $ 624,679 297 $ 6,165 $ 167,567 December 31, 2017 U.S. government and agency securities 40 $ 166 $ 26,979 73 $ 1,075 $ 58,980 States, municipalities and political subdivisions 106 734 91,245 31 389 19,718 Public utilities 16 44 7,052 5 41 1,016 Corporate securities 263 871 134,755 52 338 16,476 Mortgage-backed securities 89 475 76,349 50 477 15,210 Asset-backed securities 18 20 11,682 — — — Redeemable preferred stocks — — — 3 74 303 Total fixed maturities 532 2,310 348,062 214 2,394 111,703 Mutual Funds 1 — 131 — — — Other common stocks 5 47 748 — — — Non-redeemable preferred stocks 4 4 87 — — — Total equity securities 10 51 966 — — — Total 542 $ 2,361 $ 349,028 214 $ 2,394 $ 111,703 (1) This amount represents the actual number of discrete securities, not the number of shares or units of those securities. The numbers are not presented in thousands.
Schedule of Fair Value of Financial Instruments Measured on a Recurring Basis	The following table presents the fair value of our financial instruments measured on a recurring basis by level at September 30, 2018 and December 31, 2017 : Total Level 1 Level 2 Level 3 September 30, 2018 U.S. government and agency securities $ 102,729 $ — $ 102,729 $ — Foreign government 2,966 — 2,966 — States, municipalities and political subdivisions 151,866 — 151,866 — Public utilities 24,142 — 24,142 — Corporate securities 289,596 — 289,596 — Mortgage-backed securities 204,990 — 204,990 — Asset-backed securities 58,898 — 58,898 — Redeemable preferred stocks 1,203 821 382 — Total fixed maturities 836,390 821 835,569 — Mutual funds 51,095 51,095 — — Public utilities 2,357 2,357 — — Other common stocks 37,568 37,568 — — Non-redeemable preferred stocks 2,072 2,072 — — Total equity securities 93,092 93,092 — — Other long-term investments 8,330 300 2,173 5,857 Total investments $ 937,812 $ 94,213 $ 837,742 $ 5,857 December 31, 2017 U.S. government and agency securities $ 92,626 $ — $ 92,626 $ — Foreign government 2,036 — 2,036 — States, municipalities and political subdivisions 201,512 — 201,512 — Public utilities 20,257 — 20,257 — Corporate securities 287,562 — 287,562 — Mortgage-backed securities 143,265 — 143,265 — Asset-backed securities 14,905 — 14,905 — Redeemable preferred stocks 692 692 — — Total fixed maturities 762,855 692 762,163 — Mutual Funds 31,924 31,924 — — Public utilities 1,702 1,702 — — Other common stocks 27,902 27,902 — — Non-redeemable preferred stocks 1,767 1,767 — — Total equity securities 63,295 63,295 — — Other long-term investments 8,381 300 7,447 634 Total investments $ 834,531 $ 64,287 $ 769,610 $ 634
Schedule of Fair Value of Financial Instruments with Unobservable Inputs	The table below presents the rollforward of our Level 3 investments held at fair value during the nine months ended September 30, 2018 : Other Investments December 31, 2017 $ 634 Transfers in 5,507 Partnership income 261 Return of capital (482 ) Unrealized gains in accumulated other comprehensive income (63 ) September 30, 2018 $ 5,857
Schedule of Investments in Limited Partnerships	The information presented in the table below is as of September 30, 2018 : Book Value Unrealized Gain Unrealized Loss Fair Value Limited partnership investments $ 7,769 $ 260 $ — $ 8,029 Certificates of deposit 300 — — 300 Total other investments $ 8,069 $ 260 $ — $ 8,329

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Schedule of Purchase Price Allocation	The final purchase price allocation is as follows: Cash and cash equivalents $ 95,284 Investments 222,920 Premium and agents' receivable 31,439 Reinsurance recoverable 20,230 Prepaid reinsurance premiums 22,544 Intangible assets 30,286 Insurance contract asset 33,812 Goodwill 59,475 Other assets 4,591 Unpaid losses and loss adjustment expenses (60,529 ) Unearned premiums (128,824 ) Reinsurance payable (22,406 ) Deferred taxes (17,093 ) Other liabilities (6,261 ) Total purchase price $ 285,468
Schedule of Pro Forma Information	The unaudited pro forma financial information is not necessarily indicative of the results that we would have achieved had the transaction taken place on January 1, 2017, and the unaudited pro forma information does not purport to be indicative of future financial operating results. Nine Months Ended September 30, 2017 As Pro Forma Reported Adjustments Pro Forma Revenues $ 471,834 $ 38,096 $ 509,930 Net income (loss) (16,856 ) 6,712 (10,144 ) Diluted earnings per share (0.47 ) — (0.24 ) The following table summarizes the results of the acquired AmCo operations since the acquisition date that have been included within our unaudited condensed consolidated statements of comprehensive income: January 1, 2018 to September 30, 2018 April 3, 2017 to September 30, 2017 Revenues $ 146,301 $ 93,269 Net income 25,605 1,122

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	The following table shows the computation of basic and diluted EPS for the three and nine month periods ended September 30, 2018 and 2017 , respectively: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Numerator: Net income attributable to UIHC common stockholders $ (11,708 ) $ (28,012 ) $ 11,361 $ (16,856 ) Denominator: Weighted-average shares outstanding 42,677,893 42,524,400 42,636,515 35,341,994 Effect of dilutive securities — 216,604 154,693 221,038 Weighted-average diluted shares 42,677,893 42,741,004 42,791,208 35,563,032 Earnings available to UIHC common shareholders per share Basic $ (0.27 ) $ (0.66 ) $ 0.27 $ (0.48 ) Diluted $ (0.27 ) $ (0.66 ) $ 0.27 $ (0.47 )

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment, net consisted of the following: September 30, December 31, Land $ 2,114 $ 2,114 Building and building improvements 6,553 5,695 Computer hardware and software 16,980 18,985 Office furniture and equipment 3,024 3,413 Leasehold improvements 20 — Total, at cost 28,691 30,207 Less: accumulated depreciation and amortization (12,108 ) (12,916 ) Property and equipment, net $ 16,583 $ 17,291

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	The following is a summary of intangible assets excluding goodwill recorded as intangible assets on our Unaudited Condensed Consolidated Balance Sheets: September 30, 2018 December 31, 2017 Intangible assets subject to amortization $ 29,160 $ 41,715 Indefinite-lived intangible assets (1) 3,556 3,556 Total $ 32,716 $ 45,271 (1) Indefinite-lived intangible assets are comprised of state insurance and agent licenses, as well as perpetual software licenses.
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	Intangible assets subject to amortization consisted of the following: Weighted-average remaining amortization period (in years) Gross carrying amount Accumulated amortization Net carrying amount September 30, 2018 Value of business acquired — $ 42,788 $ (42,788 ) $ — Agency agreements acquired 7.5 34,661 (10,040 ) 24,621 Trade names acquired 5.4 6,381 (1,842 ) 4,539 Total $ 83,830 $ (54,670 ) $ 29,160 December 31, 2017 Value of business acquired 0.3 $ 42,788 $ (34,335 ) $ 8,453 Agency agreements acquired 8.0 34,661 (6,669 ) 27,992 Trade names acquired 6.0 6,381 (1,111 ) 5,270 Total $ 83,830 $ (42,115 ) $ 41,715
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Estimated amortization expense of our intangible assets to be recognized by the Company over the next five years is as follows: Year ending December 31, Estimated Amortization Expense Remaining 2018 $ 1,365 2019 5,355 2020 4,267 2021 3,555 2022 3,246 2023 3,246

Reinsurance (Tables)

Reinsurance (Tables)	9 Months Ended
	Sep. 30, 2018
Reinsurance Disclosures [Abstract]
Schedule of Ceded Premiums Earned by Type	The table below summarizes the amounts of our ceded premiums written under the various types of agreements, as well as the amortization of prepaid reinsurance premiums: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Quota share $ (24,852 ) $ (24,768 ) $ (72,824 ) $ (71,549 ) Excess-of-loss (28,450 ) (3,538 ) (392,541 ) (329,224 ) Equipment & identity theft (2,375 ) (2,606 ) (7,126 ) (7,275 ) Flood (5,897 ) (5,559 ) (15,136 ) (14,319 ) Ceded premiums written $ (61,574 ) $ (36,471 ) $ (487,627 ) $ (422,367 ) Increase (decrease) in ceded unearned premiums (71,052 ) (79,036 ) 122,616 130,012 Ceded premiums earned $ (132,626 ) $ (115,507 ) $ (365,011 ) $ (292,355 )
Schedule of Catastrophe Losses by Event Magnitude	Current year catastrophe losses disaggregated between named and numbered storms and all other catastrophe loss events are shown in the following table: 2018 2017 Number of Events Incurred Loss and LAE (1) Combined Ratio Impact Number of Events Incurred Loss and LAE (1) Combined Ratio Impact Three Months Ended September 30, Current period catastrophe losses incurred Named and numbered storms 3 $ 25,019 14.6 % 4 $ 83,460 54.7 % All other catastrophe loss events 6 9,574 5.6 % 15 (845 ) (0.6 )% Total 9 $ 34,593 20.2 % 19 $ 82,615 54.1 % Nine Months Ended September 30, Current period catastrophe losses incurred Named and numbered storms 4 $ 26,233 5.2 % 4 $ 83,724 20.0 % All other catastrophe loss events 22 32,017 6.3 % 15 31,301 7.5 % Total 26 $ 58,250 11.5 % 19 $ 115,025 27.5 % (1) Incurred loss and LAE (as defined below) is equal to losses and LAE paid plus the change in case and incurred but not reported reserves. Shown net of losses ceded to reinsurers. Incurred loss and LAE and number of events includes the development on storms during the year in which it occurred.

Liability for Unpaid Losses a_2

Liability for Unpaid Losses and Loss Adjustment Expense (Tables)	9 Months Ended
	Sep. 30, 2018
Insurance [Abstract]
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense	The table below shows the analysis of our reserve for unpaid losses for the nine months ended September 30, 2018 and 2017 on a GAAP basis: September 30, 2018 2017 Balance at January 1 $ 482,232 $ 140,855 Less: reinsurance recoverable on unpaid losses 305,673 18,724 Net balance at January 1 $ 176,559 $ 122,131 Acquisition of AmCo reserves (net of reinsurance recoverables of $19,945) — 40,583 Incurred related to: Current year 290,600 296,217 Prior years (4,207 ) (2,819 ) Total incurred $ 286,393 $ 293,398 Paid related to: Current year 163,589 160,952 Prior years 102,750 84,497 Total paid $ 266,339 $ 245,449 Net balance at September 30 $ 196,613 $ 210,663 Plus: reinsurance recoverable on unpaid losses 332,229 471,498 Balance at September 30 $ 528,842 $ 682,161 Composition of reserve for unpaid losses and LAE: Case reserves $ 259,678 $ 289,938 IBNR reserves 269,164 392,223 Balance at September 30 $ 528,842 $ 682,161

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The table below presents all long-term debt outstanding as of September 30, 2018 and December 31, 2017 : Effective Interest Rate Carrying Value at Maturity September 30, 2018 December 31, 2017 $150M Senior Notes Payable December 15, 2027 6.25% $ 150,000 $ 150,000 Florida State Board of Administration Note Payable July 1, 2026 2.84% 9,412 10,000 BB&T Term Note Payable May 26, 2031 3.75% 4,391 4,651 Total long-term debt $ 163,803 $ 164,651
Debt Issuance Cost Rollforward	The table below presents the rollforward of our debt issuance costs paid, in conjunction with the debt instruments described above, during the nine months ended September 30, 2018 and 2017: 2018 2017 Balance at January 1, $ 3,287 $ 549 Additions 63 — Amortization (255 ) (86 ) Balance at September 30, $ 3,095 $ 463

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The table below details the components of accumulated other comprehensive income at period end: Pre-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount December 31, 2017 $ 12,044 $ (2,823 ) $ 9,221 Reclassification adjustment for adoption of ASU 2016-01 (1) (12,300 ) 2,962 (9,338 ) Adjusted balance at January 1, 2018 (256 ) 139 (117 ) Changes in net unrealized gains on investments (18,407 ) 4,316 (14,091 ) Reclassification adjustment for realized gains 674 (168 ) 506 September 30, 2018 $ (17,989 ) $ 4,287 $ (13,702 ) (1) Reflects the fair value changes on equity securities as of December 31, 2017, which are reclassified under the new accounting guidance. Refer to Note 2 in these Notes to Unaudited Condensed Consolidated Financial Statements for further information.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Stockholders' Equity Note [Abstract]
Schedule of Dividends Declared	Our Board declared dividends on our outstanding shares of common stock to stockholders of record as follows for the periods presented (in thousands except per share amounts): Nine Months Ended September 30, 2018 2017 Per Share Amount Aggregate Amount Per Share Amount Aggregate Amount First Quarter $ 0.06 $ 2,565 $ 0.06 $ 1,301 Second Quarter $ 0.06 $ 2,565 $ 0.06 $ 2,561 Third Quarter $ 0.06 $ 2,569 $ 0.06 $ 2,564

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity	The following table presents certain information related to the activity of our non-vested stock option grants: Number of Stock Options Weighted Average Grant Date Fair Value Weighted Average Exercise Prices Outstanding as of December 31, 2017 — $ — $ — Granted 29,464 8.01 20.44 Less: Forfeited — — — Less: Vested — — — Outstanding as of September 30, 2018 29,464 $ 8.01 $ 20.44 Exercisable as of September 30, 2018 — $ — $ —
Schedule of Nonvested Share Activity	The following table presents certain information related to the activity of our non-vested common stock grants: Number of Restricted Shares Weighted Average Grant Date Fair Value Outstanding as of December 31, 2017 212,094 $ 16.44 Granted 174,602 20.07 Less: Forfeited 17,077 18.07 Less: Vested 139,183 16.38 Outstanding as of September 30, 2018 230,436 $ 19.11
Share-based Compensation, Activity [Table Text Block]	The following table presents our total stock-based compensation expense: Three Months Ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Employee stock-based compensation expense Pre-tax $ 248 $ 393 $ 736 $ 1,179 Post-tax (1) 196 310 581 931 Director stock-based compensation expense Pre-tax 379 244 940 752 Post-tax (1) 299 193 743 594
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The following weighted-average assumptions were used to value the stock options granted: 2018 Expected annual dividend yield 1.17 % Expected volatility 41.31 % Risk-free interest rate 2.98 % Expected term 6 years

Organization, Consolidation a_2

Organization, Consolidation and Presentation (Details)	9 Months Ended
	Sep. 30, 2018subsidiarystatessegment
Number of Wholly-Owned Subsidiaries
Number of Wholly Owned Subsidiaries | subsidiary	4
Number of Majority Owned Subsidiaries | subsidiary	1
Number of Operating Segments | segment	1
Number of States in which Entity Operates | states	12
Additional Licensed States | states	6

Investments (Details)

Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Schedule of Available-for-sale Securities
Loans and Leases Receivable, Net Amount	$ 0		$ 0		$ 20,000
Fair Value of Limited Partnership Interest			8,029
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0	$ 0	0	$ 0
Other Long-term Investments
Schedule of Available-for-sale Securities
Payments to Acquire Other Investments			$ 2,708

Investments - Schedule of Avail

Investments - Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities
Gross unrealized gains	$ 260
Gross unrealized loss	0
Fair Value	836,390	$ 762,855
Equity securities fair value	93,092	63,295
U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	104,822	93,827
Gross unrealized gains	0	40
Gross unrealized loss	2,093	1,241
Fair Value	102,729	92,626
Foreign Government
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	2,998	2,022
Gross unrealized gains	0	14
Gross unrealized loss	32	0
Fair Value	2,966	2,036
States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	154,195	200,706
Gross unrealized gains	389	1,929
Gross unrealized loss	2,718	1,123
Fair Value	151,866	201,512
Public Utilities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	24,898	20,215
Gross unrealized gains	19	127
Gross unrealized loss	775	85
Fair Value	24,142	20,257
Corporate Securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	296,009	287,025
Gross unrealized gains	197	1,746
Gross unrealized loss	6,610	1,209
Fair Value	289,596	287,562
Mortgage-backed securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	211,288	143,982
Gross unrealized gains	0	235
Gross unrealized loss	6,298	952
Fair Value	204,990	143,265
Asset-backed Securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	59,145	14,902
Gross unrealized gains	5	23
Gross unrealized loss	252	20
Fair Value	58,898	14,905
Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	1,285	755
Gross unrealized gains	3	11
Gross unrealized loss	85	74
Fair Value	1,203	692
Fixed Maturities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	854,640	763,434
Gross unrealized gains	613	4,125
Gross unrealized loss	18,863	4,704
Fair Value	836,390	762,855
Mutual Fund
Schedule of Available-for-sale Securities
Equity securities cost	44,589	29,079
Equity securities unrealized gain	6,506	2,845
Equity securities unrealized loss	0	0
Equity securities fair value	51,095	31,924
Public Utilities
Schedule of Available-for-sale Securities
Equity securities cost	2,045	1,343
Equity securities unrealized gain	331	359
Equity securities unrealized loss	19	0
Equity securities fair value	2,357	1,702
Common Stock
Schedule of Available-for-sale Securities
Equity securities cost	27,016	18,856
Equity securities unrealized gain	10,893	9,093
Equity securities unrealized loss	341	47
Equity securities fair value	37,568	27,902
Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Equity securities cost	2,098	1,718
Equity securities unrealized gain	8	53
Equity securities unrealized loss	34	4
Equity securities fair value	2,072	1,767
Equity Securities
Schedule of Available-for-sale Securities
Equity securities cost	75,748	50,996
Equity securities unrealized gain	17,738	12,350
Equity securities unrealized loss	394	51
Equity securities fair value	$ 93,092	$ 63,295

Investments - Schedule of Reali

Investments - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Debt and Equity Securities, Gain (Loss) [Abstract]
Gross realized gains	$ 20	$ 124	$ 585	$ 271
Gross realized losses	(467)	(195)	(1,259)	(825)
Net realized gains (losses)	(447)	(71)	(674)	(554)
Fair Value at Sale
Fair value at sale	5,275	11,524	13,338	30,439
Fair value at sale	46,655	10,517	116,974	48,013
Net fair value at sale	51,930	22,041	130,312	78,452
Fixed Maturities
Debt and Equity Securities, Gain (Loss) [Abstract]
Gross realized gains	12	123	68	263
Gross realized losses	(441)	(195)	(1,233)	(815)
Fair Value at Sale
Fair value at sale	4,864	11,368	11,745	30,264
Fair value at sale	46,268	10,517	116,587	47,913
Equity Securities
Debt and Equity Securities, Gain (Loss) [Abstract]
Gross realized gains	8	1	517	8
Gross realized losses	(26)	0	(26)	(10)
Fair Value at Sale
Fair value at sale	411	156	1,593	175
Fair value at sale	$ 387	$ 0	$ 387	$ 100

Investments - Investments Class

Investments - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value
Total	$ 836,390	$ 762,855
Fixed Maturities
Cost or Amortized Cost
Due in one year or less	70,131
Due after one year through five years	337,014
Due after five years through ten years	164,523
Due after ten years	12,539
Asset and mortgage backed securities	270,433
Cost or adjusted/amortized cost	$ 854,640	763,434
Percent of Total
Due in one year or less	8.20%
Due after one year through five years	39.40%
Due after five years through ten years	19.30%
Due after ten years	1.50%
Asset and mortgage backed securities	31.60%
Total	100.00%
Fair Value
Due in one year or less	$ 69,785
Due after one year through five years	331,204
Due after five years through ten years	159,481
Due after ten years	12,032
Asset and mortgage backed securities	263,888
Total	$ 836,390	$ 762,855
Percent of Total
Due in one year or less	8.30%
Due after one year through five years	39.60%
Due after five years through ten years	19.10%
Due after ten years	1.40%
Asset and mortgage backed securities	31.60%
Total	100.00%

Investments - Investment Income

Investments - Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Investment Income
Investment income	$ 6,888	$ 4,901	$ 19,665	$ 12,489
Investment expenses	(267)	(213)	(756)	(482)
Net investment income	6,621	4,688	18,909	12,007
Fixed Maturities
Net Investment Income
Investment income	5,725	4,111	15,929	10,696
Equity Securities
Net Investment Income
Investment income	525	375	1,455	940
Cash and cash equivalents
Net Investment Income
Investment income	588	285	1,427	445
Other Investments
Net Investment Income
Investment income	41	124	830	385
Other Assets
Net Investment Income
Investment income	$ 9	$ 6	$ 24	$ 23

Investments - Schedule of Unrea

Investments - Schedule of Unrealized Loss on Investments (Details) $ in Thousands	Sep. 30, 2018USD ($)security	Dec. 31, 2017USD ($)security
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 937,812	$ 834,531
Less Than Twelve Months
Number of securities | security	1,110	542
Gross unrealized losses	$ 13,092	$ 2,361
Fair value	$ 624,679	$ 349,028
Twelve Months or More
Number of securities | security	297	214
Gross unrealized losses	$ 6,165	$ 2,394
Fair value	167,567	111,703
U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 102,729	$ 92,626
Less Than Twelve Months
Number of securities | security	83	40
Gross unrealized losses	$ 580	$ 166
Fair value	$ 48,600	$ 26,979
Twelve Months or More
Number of securities | security	56	73
Gross unrealized losses	$ 1,513	$ 1,075
Fair value	54,114	58,980
States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 151,866	$ 201,512
Less Than Twelve Months
Number of securities | security	132	106
Gross unrealized losses	$ 1,742	$ 734
Fair value	$ 103,690	$ 91,245
Twelve Months or More
Number of securities | security	43	31
Gross unrealized losses	$ 976	$ 389
Fair value	30,133	19,718
Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 24,142	$ 20,257
Less Than Twelve Months
Number of securities | security	41	16
Gross unrealized losses	$ 672	$ 44
Fair value	$ 19,812	$ 7,052
Twelve Months or More
Number of securities | security	6	5
Gross unrealized losses	$ 103	$ 41
Fair value	1,976	1,016
Corporate Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 289,596	$ 287,562
Less Than Twelve Months
Number of securities | security	481	263
Gross unrealized losses	$ 4,752	$ 871
Fair value	$ 217,405	$ 134,755
Twelve Months or More
Number of securities | security	90	52
Gross unrealized losses	$ 1,858	$ 338
Fair value	49,688	16,476
Mortgage-backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 204,990	$ 143,265
Less Than Twelve Months
Number of securities | security	180	89
Gross unrealized losses	$ 4,683	$ 475
Fair value	$ 173,692	$ 76,349
Twelve Months or More
Number of securities | security	89	50
Gross unrealized losses	$ 1,615	$ 477
Fair value	29,984	15,210
Asset-backed Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 58,898	$ 14,905
Less Than Twelve Months
Number of securities | security	83	18
Gross unrealized losses	$ 250	$ 20
Fair value	$ 51,428	$ 11,682
Twelve Months or More
Number of securities | security	7	0
Gross unrealized losses	$ 2	$ 0
Fair value	1,362	0
Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 1,203	$ 692
Less Than Twelve Months
Number of securities | security	8	0
Gross unrealized losses	$ 25	$ 0
Fair value	$ 749	$ 0
Twelve Months or More
Number of securities | security	2	3
Gross unrealized losses	$ 60	$ 74
Fair value	200	303
Fixed Maturities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 836,390	$ 762,855
Less Than Twelve Months
Number of securities | security	1,013	532
Gross unrealized losses	$ 12,736	$ 2,310
Fair value	$ 618,342	$ 348,062
Twelve Months or More
Number of securities | security	293	214
Gross unrealized losses	$ 6,127	$ 2,394
Fair value	167,457	111,703
Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 2,357	1,702
Less Than Twelve Months
Number of securities | security	8
Gross unrealized losses	$ 19
Fair value	$ 672
Twelve Months or More
Number of securities | security	0
Gross unrealized losses	$ 0
Fair value	0
Common Stock
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 37,568	$ 27,902
Less Than Twelve Months
Number of securities | security	70	5
Gross unrealized losses	$ 305	$ 47
Fair value	$ 4,103	$ 748
Twelve Months or More
Number of securities | security	1	0
Gross unrealized losses	$ 36	$ 0
Fair value	91	0
Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 2,072	$ 1,767
Less Than Twelve Months
Number of securities | security	18	4
Gross unrealized losses	$ 32	$ 4
Fair value	$ 1,506	$ 87
Twelve Months or More
Number of securities | security	3	0
Gross unrealized losses	$ 2	$ 0
Fair value	19	0
Equity Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 93,092	$ 63,295
Less Than Twelve Months
Number of securities | security	97	10
Gross unrealized losses	$ 356	$ 51
Fair value	$ 6,337	$ 966
Twelve Months or More
Number of securities | security	4	0
Gross unrealized losses	$ 38	$ 0
Fair value	110	0
Other Long-term Investments
Schedule of Available-for-sale Securities
Available-for-sale Securities	8,330	8,381
Mutual Fund
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 51,095	$ 31,924
Less Than Twelve Months
Number of securities | security	1	1
Gross unrealized losses	$ 0	$ 0
Fair value	$ 56	$ 131
Twelve Months or More
Number of securities | security	0	0
Gross unrealized losses	$ 0	$ 0
Fair value	0	0
Foreign Government
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 2,966	$ 2,036
Less Than Twelve Months
Number of securities | security	5
Gross unrealized losses	$ 32
Fair value	$ 2,966
Twelve Months or More
Number of securities | security	0
Gross unrealized losses	$ 0
Fair value	$ 0

Investments - Schedule of Fair

Investments - Schedule of Fair Value of Financial Instruments Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 937,812	$ 834,531
U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	102,729	92,626
Foreign Government
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,966	2,036
States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities	151,866	201,512
Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	24,142	20,257
Corporate Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	289,596	287,562
Mortgage-backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	204,990	143,265
Asset-backed Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	58,898	14,905
Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	1,203	692
Fixed Maturities
Schedule of Available-for-sale Securities
Available-for-sale Securities	836,390	762,855
Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,357	1,702
Common Stock
Schedule of Available-for-sale Securities
Available-for-sale Securities	37,568	27,902
Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,072	1,767
Equity Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	93,092	63,295
Other Long-term Investments
Schedule of Available-for-sale Securities
Available-for-sale Securities	8,330	8,381
Mutual Fund
Schedule of Available-for-sale Securities
Available-for-sale Securities	51,095	31,924
Level 1
Schedule of Available-for-sale Securities
Available-for-sale Securities	94,213	64,287
Level 1 | U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | Foreign Government
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | Corporate Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | Mortgage-backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | Asset-backed Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 1 | Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	821	692
Level 1 | Fixed Maturities
Schedule of Available-for-sale Securities
Available-for-sale Securities	821	692
Level 1 | Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,357	1,702
Level 1 | Common Stock
Schedule of Available-for-sale Securities
Available-for-sale Securities	37,568	27,902
Level 1 | Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,072	1,767
Level 1 | Equity Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	93,092	63,295
Level 1 | Other Long-term Investments
Schedule of Available-for-sale Securities
Available-for-sale Securities	300	300
Level 1 | Mutual Fund
Schedule of Available-for-sale Securities
Available-for-sale Securities	51,095	31,924
Level 2
Schedule of Available-for-sale Securities
Available-for-sale Securities	837,742	769,610
Level 2 | U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	102,729	92,626
Level 2 | Foreign Government
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,966	2,036
Level 2 | States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities	151,866	201,512
Level 2 | Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	24,142	20,257
Level 2 | Corporate Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	289,596	287,562
Level 2 | Mortgage-backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	204,990	143,265
Level 2 | Asset-backed Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	58,898	14,905
Level 2 | Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	382	0
Level 2 | Fixed Maturities
Schedule of Available-for-sale Securities
Available-for-sale Securities	835,569	762,163
Level 2 | Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 2 | Common Stock
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 2 | Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 2 | Equity Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 2 | Other Long-term Investments
Schedule of Available-for-sale Securities
Available-for-sale Securities	2,173	7,447
Level 2 | Mutual Fund
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3
Schedule of Available-for-sale Securities
Available-for-sale Securities	5,857	634
Level 3 | U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Foreign Government
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Corporate Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Mortgage-backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Asset-backed Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Fixed Maturities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Common Stock
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Equity Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	0	0
Level 3 | Other Long-term Investments
Schedule of Available-for-sale Securities
Available-for-sale Securities	5,857	634
Level 3 | Mutual Fund
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 0	$ 0

Investments - Schedule of Fai_2

Investments - Schedule of Fair Value of Financial Instruments with Unobservable Inputs (Details) - Level 3 - Other Long-term Investments $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
December 31, 2017	$ 634
Transfers in	5,507
Partnership income	261
Return of capital	(482)
Unrealized gains in accumulated other comprehensive income	(63)
September 30, 2018	$ 5,857

Investments - Schedule of Inves

Investments - Schedule of Investments in Limited Partnerships (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Equity Securities without Readily Determinable Fair Value [Line Items]
Fair value - partnerships	$ 8,029
Other investments, cost	8,069
Total other investments	8,329
Unrealized Loss	0
Unrealized Gain	260
Limited Partnership
Equity Securities without Readily Determinable Fair Value [Line Items]
Fair value - partnerships	8,029
Other investments, cost	7,769
Unrealized Loss	0
Unrealized Gain	$ 260

Acquisitions - Schedule of Pro

Acquisitions - Schedule of Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition
Revenues	$ 187,652	$ 171,128		$ 542,853	$ 471,834
Pro Forma Revenue					509,930
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (11,707)	$ (28,012)		$ 11,362	(16,856)
Pro Forma Net Income (Loss)					$ (10,144)
Diluted earnings per share	$ (0.27)	$ (0.66)		$ 0.27	$ (0.47)
Pro Forma Diluted Earnings Per Share (in usd per share)					$ (0.24)
American Coastal Insurance Company
Business Acquisition
Pro Forma Revenue			$ 38,096
Pro Forma Net Income (Loss)			$ 6,712
Pro Forma Diluted Earnings Per Share (in usd per share)			$ 0

Acquisitions - Schedule of Purc

Acquisitions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Business Acquisition
Reinsurance Payable	$ (297,173)	$ (149,117)
Prepaid reinsurance premiums	319,916	$ 201,904
AmCo Holding Company
Business Acquisition
Cash and Cash Equivalents	95,284
Investments	222,920
Premium and Agents' Receivable	31,439
Goodwill	59,475
Intangible assets	30,286
Insurance contract asset	33,812
Other assets	4,591
Loss Reserves	(60,529)
Unearned Premiums	128,824
Reinsurance Receivable	20,230
Deferred tax liabilities	(17,093)
Other liabilities	(6,261)
Total purchase price	285,468
Reinsurance Payable	(22,406)
Prepaid reinsurance premiums	$ 22,544

Acquisitions - Schedule of Reve

Acquisitions - Schedule of Revenue and Income (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Business Acquisition
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 146,301	$ 93,269
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 25,605	$ 1,122

Earnings per Share - Schedule o

Earnings per Share - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator
Net income attributable to UIHC common stockholders	$ (11,708)	$ (28,012)	$ 11,361	$ (16,856)
Denominator
Weighted-average shares outstanding	42,677,893	42,524,400	42,636,515	35,341,994
Effect of dilutive securities	0	216,604	154,693	221,038
Weighted-average diluted shares	42,677,893	42,741,004	42,791,208	35,563,032
Basic earnings per share	$ (0.27)	$ (0.66)	$ 0.27	$ (0.48)
Diluted earnings per share	$ (0.27)	$ (0.66)	$ 0.27	$ (0.47)

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 1,819	$ 723	$ 3,382	$ 2,759

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment
Total, at cost	$ 28,691	$ 30,207
Less: Accumulated Depreciation and Amortization, Property, Plant, and Equipment	(12,108)	(12,916)
Property, Plant and Equipment, Net	16,583	17,291
Building
Property, Plant and Equipment
Total, at cost	6,553	5,695
Land
Property, Plant and Equipment
Total, at cost	2,114	2,114
Office Equipment
Property, Plant and Equipment
Total, at cost	3,024	3,413
Computer Equipment
Property, Plant and Equipment
Total, at cost	16,980	18,985
Leasehold Improvements
Property, Plant and Equipment
Total, at cost	$ 20	$ 0

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 1,365	$ 9,839	$ 12,555	$ 21,361
Goodwill	$ 73,045		$ 73,045		$ 73,045

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 83,830	$ 83,830
Finite-Lived Intangible Assets, Accumulated Amortization	(54,670)	(42,115)
Finite-Lived Intangible Assets, Net	29,160	41,715
Value of Business Acquired
Acquired Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Gross	42,788	42,788
Finite-Lived Intangible Assets, Accumulated Amortization	(42,788)	(34,335)
Finite-Lived Intangible Assets, Net	0	8,453
Customer Relationships
Acquired Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Gross	34,661	34,661
Finite-Lived Intangible Assets, Accumulated Amortization	(10,040)	(6,669)
Finite-Lived Intangible Assets, Net	$ 24,621	$ 27,992
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years 7 months	8 years
Trade Names
Acquired Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 6,381	$ 6,381
Finite-Lived Intangible Assets, Accumulated Amortization	(1,842)	(1,111)
Finite-Lived Intangible Assets, Net	$ 4,539	$ 5,270
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years 7 months	6 years

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 1,365
Finite-Lived Intangible Assets, Amortization Expense, Year Two	5,355
Finite-Lived Intangible Assets, Amortization Expense, Year Three	4,267
Finite-Lived Intangible Assets, Amortization Expense, Year Four	3,555
Finite-Lived Intangible Assets, Amortization Expense, Year Five	3,246
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 3,246

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Reconciliation (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 3,556	$ 3,556
Finite-Lived Intangible Assets, Net	29,160	41,715
Intangible Assets, Net (Excluding Goodwill)	$ 32,716	$ 45,271

Reinsurance (Details)

Reinsurance (Details) $ in Thousands	Jun. 01, 2018USD ($)Rate	Jan. 01, 2018USD ($)Rate	Jun. 01, 2017USD ($)catastrophic_eventreinsurer	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)Rate
Reinsurance Retention Policy
Quota Share Agreement, Cession Rate | Rate								20.00%
Reinsurance Multi-Year Limit	$ 262,500
Prepaid reinsurance premiums				$ 319,916		$ 319,916		$ 201,904
Policyholder Benefits and Claims Incurred, Assumed and Ceded				66,278	$ 20,419	$ 340,316	$ 40,984
Flood premiums ceded (percentage)						100.00%
Insurance commissions and fees under Flood Program				$ 408	$ 308	$ 1,194	$ 905
Minimum
Reinsurance Retention Policy
ISO Catastrophe Definition			$ 25,000
Maximum
Reinsurance Retention Policy
Amount of risk reinsured in excess of stated retention	3,100,000
Catastrophe | First Catastrophic Event
Reinsurance Retention Policy
Reinsurance Retention Policy, Coverage Percentage Hurricane Event | catastrophic_event			0.010
Catastrophe | First Catastrophic Event | Maximum
Reinsurance Retention Policy
Stated amount of upper retention limit per policy	$ 25,000
Percentage of group equity | Rate	4.60%
Catastrophe | First Catastrophic Event | FLORIDA | Maximum
Reinsurance Retention Policy
Stated amount of upper retention limit per policy	$ 60,000
Percentage of group equity | Rate	0.00%
Catastrophe | Second Catastrophic Event
Reinsurance Retention Policy
Reinsurance Retention Policy, Coverage Percentage Hurricane Event | catastrophic_event			0.020
Catastrophe | Second And Subsequent Catastrophic Events | Maximum
Reinsurance Retention Policy
Stated amount of upper retention limit per policy	$ 25,000
Catastrophe | Florida Hurricane Catastrophe Fund | FLORIDA
Reinsurance Retention Policy
Reinsurance Retention Policy, Participation Rate	45.00%
Aggregate Coverage for Covered Losses Under Reinsurance Contract	$ 907,000
Catastrophe | Unaffiliated Private Reinsurers
Reinsurance Retention Policy
Number of private reinsurers | reinsurer			41
CAT Aggregate
Reinsurance Retention Policy
Percentage of Gross Earned Premiums | Rate		4.75%
Stated amount of upper retention limit per policy		$ 20,000
Losses ceded under aggregate contract						$ 20,000
CAT Bond
Reinsurance Retention Policy
Reinsurance Multi-Year Limit	$ 100,000

Reinsurance - Schedule of Ceded

Reinsurance - Schedule of Ceded Premiums Earned by Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Effects of Reinsurance
Ceded Premiums Written	$ (61,574)	$ (36,471)	$ (487,627)	$ (422,367)
Increase (Decrease) in Ceded Unearned Premiums	(71,052)	(79,036)	122,616	130,012
Ceded Premiums Earned	(132,626)	(115,507)	(365,011)	(292,355)
Excess of Loss Product Line
Effects of Reinsurance
Ceded Premiums Written	(28,450)	(3,538)	(392,541)	(329,224)
Equipment and Identity Theft Product Line
Effects of Reinsurance
Ceded Premiums Written	(2,375)	(2,606)	(7,126)	(7,275)
Flood Product Line
Effects of Reinsurance
Ceded Premiums Written	(5,897)	(5,559)	(15,136)	(14,319)
Quota Share
Effects of Reinsurance
Ceded Premiums Written	$ (24,852)	$ (24,768)	$ (72,824)	$ (71,549)

Reinsurance - Schedule of Catas

Reinsurance - Schedule of Catastrophe Losses by Event Type (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)catastrophic_event	Sep. 30, 2017USD ($)catastrophic_event	Sep. 30, 2018USD ($)catastrophic_event	Sep. 30, 2017USD ($)catastrophic_event
Named and numbered storms
Liability for Catastrophe Claims
Number of Catastrophic Events | catastrophic_event	3	4	4	4
Catastrophic Event, Incurred Losses and Loss Adjustment Expense | $	$ 25,019	$ 83,460	$ 26,233	$ 83,724
Catastrophic Events, Impact on Combined Ratio	14.60%	54.70%	5.20%	20.00%
All other catastrophe loss events
Liability for Catastrophe Claims
Number of Catastrophic Events | catastrophic_event	6	15	22	15
Catastrophic Event, Incurred Losses and Loss Adjustment Expense | $	$ 9,574	$ (845)	$ 32,017	$ 31,301
Catastrophic Events, Impact on Combined Ratio	5.60%	(0.60%)	6.30%	7.50%
Catastrophe
Liability for Catastrophe Claims
Number of Catastrophic Events | catastrophic_event	9	19	26	19
Catastrophic Event, Incurred Losses and Loss Adjustment Expense | $	$ 34,593	$ 82,615	$ 58,250	$ 115,025
Catastrophic Events, Impact on Combined Ratio	20.20%	54.10%	11.50%	27.50%

Liability for Unpaid Losses a_3

Liability for Unpaid Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Apr. 03, 2017	Dec. 31, 2016
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Unpaid losses and loss adjustment expenses	$ 528,842	$ 682,161	$ 482,232		$ 140,855
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments	332,229	471,498	305,673		18,724
Liability for Unpaid Claims and Claims Adjustment Expense, Net	196,613	210,663	$ 176,559	$ 40,583	$ 122,131
Current Year Claims and Claims Adjustment Expense	290,600	296,217
Prior Year Claims and Claims Adjustment Expense	(4,207)	(2,819)
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims	286,393	293,398
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year	163,589	160,952
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years	102,750	84,497
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	266,339	245,449
Liability for Unpaid Claims and Claims Adjustment Expense, Reported Claims, Amount	259,678	289,938
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount	$ 269,164	$ 392,223

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 05, 2016	May 26, 2016	Sep. 22, 2006	Sep. 30, 2018	Dec. 31, 2017	Dec. 13, 2017
Debt Instrument
Notes Payable				$ 160,708	$ 161,364
BB&T Term Note Payable
Debt Instrument
Notes Payable		$ 5,200
Interest rate (percentage)		1.65%
Debt Instrument, Term		15 years
Florida State Board of Administration
Debt Instrument
Notes Payable			$ 20,000
Debt Instrument, Term			20 years
150M Senior Notes
Debt Instrument
Notes Payable						$ 150,000
Interest rate (percentage)						6.25%
Debt Instrument, Term	10 years

Schedule of Long-Term Debt (Det

Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument
Long-term Debt, Fair Value	$ 163,803	$ 164,651
150M Senior Notes
Debt Instrument
Debt Instrument, Maturity Date	Dec. 15, 2027
Debt Instrument, Interest Rate, Effective Percentage	6.25%
Long-term Debt, Fair Value	$ 150,000	150,000
BB&T Term Note Payable
Debt Instrument
Debt Instrument, Maturity Date	May 26, 2031
Debt Instrument, Interest Rate, Effective Percentage	3.75%
Long-term Debt, Fair Value	$ 4,391	4,651
Florida State Board of Administration
Debt Instrument
Debt Instrument, Maturity Date	Jul. 1, 2026
Debt Instrument, Interest Rate, Effective Percentage	2.84%
Long-term Debt, Fair Value	$ 9,412	$ 10,000

Debt Issuance Cost Rollforward

Debt Issuance Cost Rollforward (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Debt Issuance Costs, Gross	$ 63		$ 0
Accumulated Amortization, Debt Issuance Costs	(255)		(86)
Debt Issuance Costs, Net	$ 3,095	$ 3,287	$ 463	$ 549

Statutory Accounting and Regu_2

Statutory Accounting and Regulation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Insurance [Abstract]
Statutory net income	$ (13,134,000)	$ (24,828,000)	$ 8,342,000	$ (20,238,000)
Statutory capital and surplus balance	$ 483,828,000		483,828,000		$ 389,384,000
Recouperable assessment - Texas			570,000
Recouperable assessment - North Carolina			$ 894,000

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Legal Fees
Related Party Transaction
Amounts of Transactions	$ 982	$ 871	$ 2,407	$ 2,513
Spouse of Executive Officer | Legal Fees
Related Party Transaction
Amounts of Transactions	491	436	$ 1,204	$ 1,257
Related party interest in billings (percentage)			50.00%
Director | AmRisc gross written premiums
Related Party Transaction
Amounts of Transactions	55,476	41,311	$ 277,239
Related party interest in billings (percentage)			7.70%
Director | AmRisc Fees and Commission
Related Party Transaction
Amounts of Transactions	18,162	12,011	$ 75,012
Director | AmRisc ceded premiums written
Related Party Transaction
Amounts of Transactions	750	640	4,116
Director | AmRisc Rent
Related Party Transaction
Amounts of Transactions	$ 5	$ 4	14
Director | AmRisc net premiums receivable
Related Party Transaction
Amounts of Transactions			$ 28,244

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Pre-Tax Amount
December 31, 2017	$ 12,044
Pretax Cumulative Effect of New Accounting Principal in Period of Adoption		$ (12,300)
Changes in net unrealized gains on investments	(18,407)
AOCI Before Tax Attributable to Parent after Cumulative Effect Adjustment		(256)
Reclassification adjustment for realized gains	674
September 30, 2018	(17,989)
Tax (Expense) Benefit
December 31, 2017	(2,823)
Tax Cumulative Effect of New Accounting Principal in Period of Adoption		2,962
AOCI Tax Attributable to Parent After Cumulative Effect Adjustment		139
Changes in net unrealized gains on investments	4,316
Reclassification adjustment for realized gains	(168)
September 30, 2018	4,287
Cumulative Effect of New Accounting Principle in Period of Adoption	9,338	(9,338)
Net-of-Tax Amount
December 31, 2017	9,221
AOCI Net of Tax After Cumulative Effect Adjustment		$ (117)
Changes in net unrealized gains on investments	(14,091)
Reclassification adjustment for realized gains	(506)
September 30, 2018	$ (13,702)

Schedule of Dividends Declared

Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Class of Stock
Dividends declared per share (in usd per share)	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.18	$ 0.18
Aggregate amount of dividends	$ 2,569	$ 2,565	$ 2,565	$ 2,564	$ 2,561	$ 1,301	$ 7,699	$ 6,426

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$ 2,636		$ 2,636
Post-Tax	196	$ 310	581	$ 931
Pre-Tax	248	393	736	1,179
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	906		906
Post-Tax	299	193	743	594
Pre-Tax	$ 379	$ 244	$ 940	$ 752

Stock-Based Compensation - Non-

Stock-Based Compensation - Non-Vested Common Stock Grants (Details) - Restricted Stock [Member] - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Less: Vested shares			139,183
Less: Vested (fair value)			$ 16.38
Granted shares	88,392	0	174,602	155,122
Granted (fair value)	$ 20.44		$ 20.07	$ 15.57
Outstanding shares	230,436		230,436		212,094
Outstanding (fair value)	$ 19.11		$ 19.11		$ 16.44
Less: Forfeited shares			17,077
Less: Forfeited (fair value)			$ 18.07

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted-Average Assumptions - Stock Options (Details)	9 Months Ended
	Sep. 30, 2018Rate
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected annual dividend yield	1.17%
Expected volatility	41.31%
Risk-free interest rate	2.98%
Expected term	6

Stock-Based Compensation - No_2

Stock-Based Compensation - Non-Vested Stock Options (Details) - $ / shares	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercisable shares	0
Less: Vested shares	0
Less: Forfeited shares	0
Granted shares	29,464
Outstanding shares	29,464	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding (Weight-Average Exercise)	$ 20.44	$ 0
Granted (Weighted-Average Grant Date)	8.01
Granted (Weighted-Average Exercise)	20.44
Less: Forfeited (Weighted-Average Grant Date)	0
Less: Forfeited (Weighted-Average Exercise)	0
Less: Vested (Weighted-Average Grant Date)	0
Less: Vested (Weighted-Average Exercise)	0
Exercisable (Weighted-Average Exercise)	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 06, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Subsequent Event
Proceeds from Contributions from Parent								$ 25,000
Dividends declared per share (in usd per share)		$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.18	$ 0.18
Subsequent Event
Subsequent Event
Dividends declared per share (in usd per share)	$ 0.06
American Coastal Insurance Company
Subsequent Event
Statutory Accounting Practices, Dividends Paid with Approval of Regulatory Agency								$ 50,000
Interboro Insurance Company
Subsequent Event
Statutory Accounting Practices, Dividends Paid with Approval of Regulatory Agency								1,764
Minimum
Subsequent Event
Loss Contingency, Estimate of Possible Loss		$ 25,000						25,000
Maximum
Subsequent Event
Loss Contingency, Estimate of Possible Loss		$ 35,000						$ 35,000